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2,996 km · Domestic

Indianapolis (IND) – Seattle–Tacoma (SEA)

In July 2026, 122 flights operated between Indianapolis and Seattle–Tacoma (both directions), and 77.0% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January5554▼ 1.8%
February4851▲ 6.3%
March6275▲ 21.0%
April77101▲ 31.2%
May123124▲ 0.8%
June1181180.0%
July1221220.0%
August118––
September102––
October91–in progress
November77––
December81––
Year to date (Jan–Jul)605645▲ 6.6%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January60.0%68.5%▲ 14.2%
February79.2%78.4%▼ 1.0%
March66.1%74.7%▲ 13.0%
April75.3%85.1%▲ 13.0%
May69.1%83.1%▲ 20.3%
June64.4%66.9%▲ 3.9%
July63.9%77.0%▲ 20.5%
August66.1%––
September70.6%––
October83.5%–in progress
November81.8%––
December67.9%––
Year-to-date average (Jan–Jul)68.3%76.2%▲ 11.7%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January24▲ 100.0%
February00–
March02–
April01–
May10▼ 100.0%
June220.0%
July00–
August0––
September0––
October5–in progress
November0––
December1––
Year to date (Jan–Jul)59▲ 80.0%

By direction

IND → SEA

Scheduled flights
981
Flights operated
969
Cancelled
12 · 1.2%
On-time departures
74.3%

SEA → IND

Scheduled flights
982
Flights operated
973
Cancelled
9 · 0.9%
On-time departures
72.9%

IND → SEA and SEA → IND counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Alaska Airlines AS 1,963 100.0% 73.6% 21

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay07:00–08:007.4min · 271 recorded · 266 measured
Gap to highest-delay hour7.7min07:00 ↔ 18:00
Recorded flights1,963IND–SEA

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 114 recorded · 114 measured · Source: the US BTS 07:00 · 81.2% · 271 recorded · 266 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 28 recorded · 28 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 52 recorded · 51 measured · Source: the US BTS 10:00 · 74.0% · 464 recorded · 461 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 120 recorded · 117 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 8 recorded · 8 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 51 recorded · 50 measured · Source: the US BTS 18:00 · 67.4% · 381 recorded · 377 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 135 recorded · 133 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 117 recorded · 115 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 195 recorded · 195 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 27 recorded · 27 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · Fewer than 200 measured departures · 114 recorded · 114 measured · Source: the US BTS 07:00 · 7.4 min · 271 recorded · 266 measured · Source: the US BTS 08:00 · Fewer than 200 measured departures · 28 recorded · 28 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 52 recorded · 51 measured · Source: the US BTS 10:00 · 10.5 min · 464 recorded · 461 measured · Source: the US BTS 11:00 · Fewer than 200 measured departures · 120 recorded · 117 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 8 recorded · 8 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 51 recorded · 50 measured · Source: the US BTS 18:00 · 15.2 min · 381 recorded · 377 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 135 recorded · 133 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · Fewer than 200 measured departures · 117 recorded · 115 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 195 recorded · 195 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 27 recorded · 27 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 114 · 114 recorded · 114 measured · Source: the US BTS 07:00 · 271 · 271 recorded · 266 measured · Source: the US BTS 08:00 · 28 · 28 recorded · 28 measured · Source: the US BTS 09:00 · 52 · 52 recorded · 51 measured · Source: the US BTS 10:00 · 464 · 464 recorded · 461 measured · Source: the US BTS 11:00 · 120 · 120 recorded · 117 measured · Source: the US BTS 12:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 13:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · 8 · 8 recorded · 8 measured · Source: the US BTS 17:00 · 51 · 51 recorded · 50 measured · Source: the US BTS 18:00 · 381 · 381 recorded · 377 measured · Source: the US BTS 19:00 · 135 · 135 recorded · 133 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · 117 · 117 recorded · 115 measured · Source: the US BTS 22:00 · 195 · 195 recorded · 195 measured · Source: the US BTS 23:00 · 27 · 27 recorded · 27 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:00Fewer than 200 measured departures—114114
07:0081.2%7.4 min266271
08:00Fewer than 200 measured departures—2828
09:00Fewer than 200 measured departures—5152
10:0074.0%10.5 min461464
11:00Fewer than 200 measured departures—117120
12:00No observations———
13:00No observations———
14:00No observations———
15:00No observations———
16:00Fewer than 200 measured departures—88
17:00Fewer than 200 measured departures—5051
18:0067.4%15.2 min377381
19:00Fewer than 200 measured departures—133135
20:00No observations———
21:00Fewer than 200 measured departures—115117
22:00Fewer than 200 measured departures—195195
23:00Fewer than 200 measured departures—2727

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 73.4% · 298 recorded · 297 measured · Source: the US BTS Tuesday · 75.2% · 243 recorded · 242 measured · Source: the US BTS Wednesday · 74.5% · 272 recorded · 271 measured · Source: the US BTS Thursday · 74.8% · 292 recorded · 290 measured · Source: the US BTS Friday · 72.5% · 303 recorded · 298 measured · Source: the US BTS Saturday · 72.2% · 259 recorded · 255 measured · Source: the US BTS Sunday · 72.7% · 296 recorded · 289 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 12.1 min · 298 recorded · 297 measured · Source: the US BTS Tuesday · 8.5 min · 243 recorded · 242 measured · Source: the US BTS Wednesday · 10.0 min · 272 recorded · 271 measured · Source: the US BTS Thursday · 11.1 min · 292 recorded · 290 measured · Source: the US BTS Friday · 12.6 min · 303 recorded · 298 measured · Source: the US BTS Saturday · 14.6 min · 259 recorded · 255 measured · Source: the US BTS Sunday · 13.8 min · 296 recorded · 289 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 298 · 298 recorded · 297 measured · Source: the US BTS Tuesday · 243 · 243 recorded · 242 measured · Source: the US BTS Wednesday · 272 · 272 recorded · 271 measured · Source: the US BTS Thursday · 292 · 292 recorded · 290 measured · Source: the US BTS Friday · 303 · 303 recorded · 298 measured · Source: the US BTS Saturday · 259 · 259 recorded · 255 measured · Source: the US BTS Sunday · 296 · 296 recorded · 289 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday73.4%12.1 min297298
Tuesday75.2%8.5 min242243
Wednesday74.5%10.0 min271272
Thursday74.8%11.1 min290292
Friday72.5%12.6 min298303
Saturday72.2%14.6 min255259
Sunday72.7%13.8 min289296

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Jan · Fewer than 200 measured departures · 115 recorded · 109 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 99 recorded · 99 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 139 recorded · 137 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 179 recorded · 178 measured · Source: the US BTS May · 76.1% · 248 recorded · 247 measured · Source: the US BTS Jun · 65.7% · 240 recorded · 236 measured · Source: the US BTS Jul · 70.5% · 244 recorded · 244 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 118 recorded · 118 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 102 recorded · 102 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 153 recorded · 147 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 154 recorded · 154 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 172 recorded · 171 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · Fewer than 200 measured departures · 115 recorded · 109 measured · Source: the US BTS Feb · Fewer than 200 measured departures · 99 recorded · 99 measured · Source: the US BTS Mar · Fewer than 200 measured departures · 139 recorded · 137 measured · Source: the US BTS Apr · Fewer than 200 measured departures · 179 recorded · 178 measured · Source: the US BTS May · 7.7 min · 248 recorded · 247 measured · Source: the US BTS Jun · 20.9 min · 240 recorded · 236 measured · Source: the US BTS Jul · 17.6 min · 244 recorded · 244 measured · Source: the US BTS Aug · Fewer than 200 measured departures · 118 recorded · 118 measured · Source: the US BTS Sep · Fewer than 200 measured departures · 102 recorded · 102 measured · Source: the US BTS Oct · Fewer than 200 measured departures · 153 recorded · 147 measured · Source: the US BTS Nov · Fewer than 200 measured departures · 154 recorded · 154 measured · Source: the US BTS Dec · Fewer than 200 measured departures · 172 recorded · 171 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 115 · 115 recorded · 109 measured · Source: the US BTS Feb · 99 · 99 recorded · 99 measured · Source: the US BTS Mar · 139 · 139 recorded · 137 measured · Source: the US BTS Apr · 179 · 179 recorded · 178 measured · Source: the US BTS May · 248 · 248 recorded · 247 measured · Source: the US BTS Jun · 240 · 240 recorded · 236 measured · Source: the US BTS Jul · 244 · 244 recorded · 244 measured · Source: the US BTS Aug · 118 · 118 recorded · 118 measured · Source: the US BTS Sep · 102 · 102 recorded · 102 measured · Source: the US BTS Oct · 153 · 153 recorded · 147 measured · Source: the US BTS Nov · 154 · 154 recorded · 154 measured · Source: the US BTS Dec · 172 · 172 recorded · 171 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—109115
FebFewer than 200 measured departures—9999
MarFewer than 200 measured departures—137139
AprFewer than 200 measured departures—178179
May76.1%7.7 min247248
Jun65.7%20.9 min236240
Jul70.5%17.6 min244244
AugFewer than 200 measured departures—118118
SepFewer than 200 measured departures—102102
OctFewer than 200 measured departures—147153
NovFewer than 200 measured departures—154154
DecFewer than 200 measured departures—171172

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 72.8% 1,429
  • Delayed >15 min 26.1% 513
  • Cancelled 1.1% 21
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

8
8 of 8
Flight numbersBy direction DeparturesOn time
AS500 SEA → IND 608 73.6%
AS500 IND → SEA 389 67.8%
AS546 IND → SEA 212 80.5%
AS391 IND → SEA 201 75.9%
AS545 SEA → IND 193 70.2%
AS625 IND → SEA 130 81.4%
AS624 SEA → IND 116 70.7%
AS363 IND → SEA 42 71.4%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 122 +0.0% 0 77.0%
June 2026 118 +0.0% 2 66.9%
May 2026 124 +0.8% 0 83.1%
April 2026 101 +31.2% 1 85.1%
March 2026 75 +21.0% 2 74.7%
February 2026 51 +6.3% 0 78.4%
January 2026 54 −1.8% 4 68.5%
December 2025 81 −10.0% 1 67.9%
November 2025 77 +0.0% 0 81.8%
October 2025 91 +62.5% 5 83.5%
September 2025 102 0 70.6%
August 2025 118 0 66.1%
July 2025 122 0 63.9%
June 2025 118 2 64.4%
May 2025 123 1 69.1%
April 2025 77 0 75.3%
March 2025 62 0 66.1%
February 2025 48 0 79.2%
January 2025 55 2 60.0%
December 2024 90 0 76.7%
November 2024 77 0 90.9%
October 2024 56 1 75.0%

How to read this chart

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