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366 km · Domestic

Roberts Field (RDM) – Seattle–Tacoma (SEA)

In July 2026, 304 flights operated between Roberts Field and Seattle–Tacoma (both directions), and 83.6% 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
January268265▼ 1.1%
February220231▲ 5.0%
March248292▲ 17.7%
April241309▲ 28.2%
May316322▲ 1.9%
June360299▼ 16.9%
July366304▼ 16.9%
August389––
September419––
October323–in progress
November294––
December302––
Year to date (Jan–Jul)2,0192,022▲ 0.1%

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
January86.2%85.7%▼ 0.6%
February80.0%86.6%▲ 8.2%
March87.9%83.6%▼ 4.9%
April90.0%86.4%▼ 4.0%
May87.7%86.6%▼ 1.3%
June77.2%83.3%▲ 7.9%
July78.1%83.6%▲ 7.0%
August79.9%––
September89.7%––
October87.6%–in progress
November88.4%––
December84.8%––
Year-to-date average (Jan–Jul)83.9%85.1%▲ 1.5%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January29▲ 350.0%
February417▲ 325.0%
March08–
April110.0%
May01–
June00–
July220.0%
August3––
September1––
October2–in progress
November20––
December2––
Year to date (Jan–Jul)938▲ 322.2%

Airlines on this route

  1. SkyWest Airlines 75.1%
  2. Alaska Airlines 24.9%

Oct 1, 2024 – Jul 31, 2026

By direction

RDM → SEA

Scheduled flights
3,322
Flights operated
3,274
Cancelled
48 · 1.4%
On-time departures
86.1%

SEA → RDM

Scheduled flights
3,321
Flights operated
3,271
Cancelled
50 · 1.5%
On-time departures
84.3%

RDM → SEA and SEA → RDM counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 4,990 75.1% 87.7% 69
Alaska Airlines AS 1,653 24.9% 77.8% 29

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 delay06:00–07:00-0.5min · 475 recorded · 470 measured
Gap to highest-delay hour13.1min06:00 ↔ 13:00
Recorded flights6,643RDM–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 · Fewer than 200 measured departures · 170 recorded · 168 measured · Source: the US BTS 06:00 · 94.7% · 475 recorded · 470 measured · Source: the US BTS 07:00 · 92.4% · 296 recorded · 291 measured · Source: the US BTS 08:00 · 89.9% · 344 recorded · 336 measured · Source: the US BTS 09:00 · 90.2% · 662 recorded · 652 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 64 recorded · 61 measured · Source: the US BTS 11:00 · 83.9% · 1,038 recorded · 1,028 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 90 recorded · 89 measured · Source: the US BTS 13:00 · 72.7% · 409 recorded · 407 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 28 recorded · 27 measured · Source: the US BTS 15:00 · 83.7% · 426 recorded · 423 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 164 recorded · 160 measured · Source: the US BTS 17:00 · 83.4% · 835 recorded · 827 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 41 recorded · 38 measured · Source: the US BTS 19:00 · 87.1% · 623 recorded · 610 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 157 recorded · 151 measured · Source: the US BTS 21:00 · 88.5% · 593 recorded · 582 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 165 recorded · 163 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 63 recorded · 62 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 · Fewer than 200 measured departures · 170 recorded · 168 measured · Source: the US BTS 06:00 · -0.5 min · 475 recorded · 470 measured · Source: the US BTS 07:00 · 7.5 min · 296 recorded · 291 measured · Source: the US BTS 08:00 · 3.8 min · 344 recorded · 336 measured · Source: the US BTS 09:00 · 1.6 min · 662 recorded · 652 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 64 recorded · 61 measured · Source: the US BTS 11:00 · 6.1 min · 1,038 recorded · 1,028 measured · Source: the US BTS 12:00 · Fewer than 200 measured departures · 90 recorded · 89 measured · Source: the US BTS 13:00 · 12.7 min · 409 recorded · 407 measured · Source: the US BTS 14:00 · Fewer than 200 measured departures · 28 recorded · 27 measured · Source: the US BTS 15:00 · 4.9 min · 426 recorded · 423 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 164 recorded · 160 measured · Source: the US BTS 17:00 · 5.2 min · 835 recorded · 827 measured · Source: the US BTS 18:00 · Fewer than 200 measured departures · 41 recorded · 38 measured · Source: the US BTS 19:00 · 2.3 min · 623 recorded · 610 measured · Source: the US BTS 20:00 · Fewer than 200 measured departures · 157 recorded · 151 measured · Source: the US BTS 21:00 · 3.3 min · 593 recorded · 582 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 165 recorded · 163 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 63 recorded · 62 measured · Source: the US BTS

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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 · 170 · 170 recorded · 168 measured · Source: the US BTS 06:00 · 475 · 475 recorded · 470 measured · Source: the US BTS 07:00 · 296 · 296 recorded · 291 measured · Source: the US BTS 08:00 · 344 · 344 recorded · 336 measured · Source: the US BTS 09:00 · 662 · 662 recorded · 652 measured · Source: the US BTS 10:00 · 64 · 64 recorded · 61 measured · Source: the US BTS 11:00 · 1,038 · 1,038 recorded · 1,028 measured · Source: the US BTS 12:00 · 90 · 90 recorded · 89 measured · Source: the US BTS 13:00 · 409 · 409 recorded · 407 measured · Source: the US BTS 14:00 · 28 · 28 recorded · 27 measured · Source: the US BTS 15:00 · 426 · 426 recorded · 423 measured · Source: the US BTS 16:00 · 164 · 164 recorded · 160 measured · Source: the US BTS 17:00 · 835 · 835 recorded · 827 measured · Source: the US BTS 18:00 · 41 · 41 recorded · 38 measured · Source: the US BTS 19:00 · 623 · 623 recorded · 610 measured · Source: the US BTS 20:00 · 157 · 157 recorded · 151 measured · Source: the US BTS 21:00 · 593 · 593 recorded · 582 measured · Source: the US BTS 22:00 · 165 · 165 recorded · 163 measured · Source: the US BTS 23:00 · 63 · 63 recorded · 62 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———
05:00Fewer than 200 measured departures—168170
06:0094.7%-0.5 min470475
07:0092.4%7.5 min291296
08:0089.9%3.8 min336344
09:0090.2%1.6 min652662
10:00Fewer than 200 measured departures—6164
11:0083.9%6.1 min1,0281,038
12:00Fewer than 200 measured departures—8990
13:0072.7%12.7 min407409
14:00Fewer than 200 measured departures—2728
15:0083.7%4.9 min423426
16:00Fewer than 200 measured departures—160164
17:0083.4%5.2 min827835
18:00Fewer than 200 measured departures—3841
19:0087.1%2.3 min610623
20:00Fewer than 200 measured departures—151157
21:0088.5%3.3 min582593
22:00Fewer than 200 measured departures—163165
23:00Fewer than 200 measured departures—6263

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 84.8% · 997 recorded · 981 measured · Source: the US BTS Tuesday · 87.0% · 935 recorded · 920 measured · Source: the US BTS Wednesday · 86.1% · 922 recorded · 914 measured · Source: the US BTS Thursday · 83.1% · 982 recorded · 963 measured · Source: the US BTS Friday · 84.7% · 985 recorded · 967 measured · Source: the US BTS Saturday · 87.6% · 859 recorded · 854 measured · Source: the US BTS Sunday · 83.6% · 963 recorded · 946 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 · 5.9 min · 997 recorded · 981 measured · Source: the US BTS Tuesday · 4.2 min · 935 recorded · 920 measured · Source: the US BTS Wednesday · 3.9 min · 922 recorded · 914 measured · Source: the US BTS Thursday · 6.0 min · 982 recorded · 963 measured · Source: the US BTS Friday · 6.2 min · 985 recorded · 967 measured · Source: the US BTS Saturday · 1.9 min · 859 recorded · 854 measured · Source: the US BTS Sunday · 6.4 min · 963 recorded · 946 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 · 997 · 997 recorded · 981 measured · Source: the US BTS Tuesday · 935 · 935 recorded · 920 measured · Source: the US BTS Wednesday · 922 · 922 recorded · 914 measured · Source: the US BTS Thursday · 982 · 982 recorded · 963 measured · Source: the US BTS Friday · 985 · 985 recorded · 967 measured · Source: the US BTS Saturday · 859 · 859 recorded · 854 measured · Source: the US BTS Sunday · 963 · 963 recorded · 946 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday84.8%5.9 min981997
Tuesday87.0%4.2 min920935
Wednesday86.1%3.9 min914922
Thursday83.1%6.0 min963982
Friday84.7%6.2 min967985
Saturday87.6%1.9 min854859
Sunday83.6%6.4 min946963

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 · 85.9% · 544 recorded · 533 measured · Source: the US BTS Feb · 83.4% · 472 recorded · 451 measured · Source: the US BTS Mar · 85.6% · 548 recorded · 540 measured · Source: the US BTS Apr · 88.0% · 552 recorded · 550 measured · Source: the US BTS May · 87.2% · 639 recorded · 638 measured · Source: the US BTS Jun · 80.0% · 659 recorded · 659 measured · Source: the US BTS Jul · 80.6% · 674 recorded · 670 measured · Source: the US BTS Aug · 80.0% · 392 recorded · 389 measured · Source: the US BTS Sep · 89.7% · 420 recorded · 419 measured · Source: the US BTS Oct · 88.8% · 501 recorded · 499 measured · Source: the US BTS Nov · 89.8% · 618 recorded · 598 measured · Source: the US BTS Dec · 84.6% · 624 recorded · 599 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 5.7 min · 544 recorded · 533 measured · Source: the US BTS Feb · 7.5 min · 472 recorded · 451 measured · Source: the US BTS Mar · 6.7 min · 548 recorded · 540 measured · Source: the US BTS Apr · 1.5 min · 552 recorded · 550 measured · Source: the US BTS May · 2.5 min · 639 recorded · 638 measured · Source: the US BTS Jun · 6.8 min · 659 recorded · 659 measured · Source: the US BTS Jul · 10.0 min · 674 recorded · 670 measured · Source: the US BTS Aug · 6.6 min · 392 recorded · 389 measured · Source: the US BTS Sep · 0.9 min · 420 recorded · 419 measured · Source: the US BTS Oct · 2.3 min · 501 recorded · 499 measured · Source: the US BTS Nov · 0.4 min · 618 recorded · 598 measured · Source: the US BTS Dec · 7.8 min · 624 recorded · 599 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 · 544 · 544 recorded · 533 measured · Source: the US BTS Feb · 472 · 472 recorded · 451 measured · Source: the US BTS Mar · 548 · 548 recorded · 540 measured · Source: the US BTS Apr · 552 · 552 recorded · 550 measured · Source: the US BTS May · 639 · 639 recorded · 638 measured · Source: the US BTS Jun · 659 · 659 recorded · 659 measured · Source: the US BTS Jul · 674 · 674 recorded · 670 measured · Source: the US BTS Aug · 392 · 392 recorded · 389 measured · Source: the US BTS Sep · 420 · 420 recorded · 419 measured · Source: the US BTS Oct · 501 · 501 recorded · 499 measured · Source: the US BTS Nov · 618 · 618 recorded · 598 measured · Source: the US BTS Dec · 624 · 624 recorded · 599 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan85.9%5.7 min533544
Feb83.4%7.5 min451472
Mar85.6%6.7 min540548
Apr88.0%1.5 min550552
May87.2%2.5 min638639
Jun80.0%6.8 min659659
Jul80.6%10.0 min670674
Aug80.0%6.6 min389392
Sep89.7%0.9 min419420
Oct88.8%2.3 min499501
Nov89.8%0.4 min598618
Dec84.6%7.8 min599624

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 84.0% 5,577
  • Delayed >15 min 14.6% 968
  • Cancelled 1.5% 98
  • 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

34
34 of 34
Flight numbersBy direction DeparturesOn time
OO4036 RDM → SEA 658 92.9%
OO4141 SEA → RDM 628 88.9%
OO3735 SEA → RDM 624 90.3%
OO4141 RDM → SEA 602 87.9%
OO3735 RDM → SEA 593 87.0%
OO4047 SEA → RDM 455 88.6%
AS924 SEA → RDM 370 71.0%
AS907 RDM → SEA 237 88.9%
OO3435 SEA → RDM 219 78.5%
AS338 RDM → SEA 152 87.8%
AS319 SEA → RDM 148 76.2%
AS943 RDM → SEA 136 94.8%
OO3363 RDM → SEA 133 74.4%
AS154 SEA → RDM 114 70.8%
AS154 RDM → SEA 113 57.7%
OO3675 SEA → RDM 79 90.7%
OO3485 SEA → RDM 68 95.6%
OO3485 RDM → SEA 68 88.2%
OO4065 SEA → RDM 62 87.1%
OO3481 SEA → RDM 57 82.5%
OO3481 RDM → SEA 57 82.5%
AS667 SEA → RDM 55 60.0%
OO3126 SEA → RDM 52 76.5%
OO3026 RDM → SEA 51 98.0%
OO3027 SEA → RDM 51 78.4%
OO3124 RDM → SEA 51 66.0%
OO3299 SEA → RDM 45 93.3%
OO3392 RDM → SEA 44 75.0%
OO3466 RDM → SEA 44 81.4%
OO4058 SEA → RDM 36 83.3%
AS317 SEA → RDM 35 85.7%
AS340 RDM → SEA 34 70.6%
OO3249 RDM → SEA 31 92.9%
OO3935 RDM → SEA 31 80.7%

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 304 −16.9% 2 83.6%
June 2026 299 −16.9% 0 83.3%
May 2026 322 +1.9% 1 86.6%
April 2026 309 +28.2% 1 86.4%
March 2026 292 +17.7% 8 83.6%
February 2026 231 +5.0% 17 86.6%
January 2026 265 −1.1% 9 85.7%
December 2025 302 +1.7% 2 84.8%
November 2025 294 −3.3% 20 88.4%
October 2025 323 +83.5% 2 87.6%
September 2025 419 1 89.7%
August 2025 389 3 79.9%
July 2025 366 2 78.1%
June 2025 360 0 77.2%
May 2025 316 0 87.7%
April 2025 241 1 90.0%
March 2025 248 0 87.9%
February 2025 220 4 80.0%
January 2025 268 2 86.2%
December 2024 297 23 84.5%
November 2024 304 0 91.1%
October 2024 176 0 90.9%

How to read this chart

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