Airlines with flights from Houston to Seattle
There are five airlines with scheduled flights between IAH and SEA. Both United and Alaska Airlines operates non-stop flights from Houston Airport to Seattle Airport and the flight time is 4 hours and 47 minutes.
There are five airlines with scheduled flights between IAH and SEA. Both United and Alaska Airlines operates non-stop flights from Houston Airport to Seattle Airport and the flight time is 4 hours and 47 minutes. Choose airline
Direct
Non-stop
4h 47min
Direct
Non-stop
4h 43min
Via Salt Lake City
6h 8min
Via Portland
6h 8min
Via Denver
6h 14min
Via Dallas
6h 25min
Via Phoenix
6h 32min
Via San Francisco
7h 3min
Via Los Angeles
7h 9min
Via Los Angeles
7h 17min
Via Minneapolis
7h 28min
Via Denver
7h 31min
NEW
Via Las Vegas
8h 23min
NEW
Via Los Angeles
9h 4min
NEW
Via San Diego
13h 27min
Schedules
Non-stop with United Airlines
-
Total flight time: 4 hours and 47 minutes
-
Houston is a United Airlines hub.
-
30 flights per week
-
Boeing 737-900 PassengerBoeing 737-800 PassengerBoeing 737MAX 9 Passenger
-
Business and first class available
IAH
Direct
SEA
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
UA1351
08:00
08:00
08:00
08:00
08:00
08:00
08:00
UA2205
10:02
10:02
10:02
10:02
10:02
10:02
10:02
UA2638
16:25
16:25
16:25
16:25
16:25
16:25
16:25
UA1795
18:05
18:05
18:05
18:05
18:05
----
18:05
UA2456
----
----
----
20:02
20:02
----
20:05
The timetable & schedule information was updated at 2026-04-21
Non-stop with Alaska Airlines
-
Total flight time: 4 hours and 43 minutes
-
One World Alliance
-
Seattle is a Alaska Airlines hub (Primary hub).
-
19 flights per week
-
Boeing 737-900 (winglets) Passenger/BBJ3Boeing 737MAX 9 Passenger
-
Business and first class available
IAH
Direct
SEA
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
AS453
06:02
06:02
06:02
06:02
06:02
06:02
06:02
AS241
08:00
08:00
08:00
08:00
08:00
08:00
08:00
AS439
14:38
14:38
14:38
14:38
14:38
14:38
14:38
The timetable & schedule information was updated at 2026-04-21
Via Salt Lake City with Delta Air Lines
-
Total flight time: 6h 08m - 8h 35m.
-
Sky Team Alliance
-
Seattle is a Delta Air Lines hub.
-
80 flights per week
IAH
Via SLC
SEA
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
DL1583
DL2995
DL2995
07:35
07:35
07:35
07:35
07:35
07:35
07:35
DL1532
DL2817
DL2817
----
12:04
----
12:04
----
----
----
DL1532
DL871
DL871
12:33
----
12:33
----
12:33
----
12:33
DL1299
DL871
DL871
----
----
----
----
----
14:25
----
DL1299
DL2998
DL2998
19:01
19:01
19:01
19:01
19:01
----
19:01
The timetable & schedule information was updated at 2026-04-21
Via Portland with Alaska Airlines
-
Total flight time: 6h 08m - 7h 57m.
-
One World Alliance
-
Seattle is a Alaska Airlines hub (Primary hub).
-
33 flights per week
-
Boeing 737-900 (winglets) Passenger/BBJ3Boeing 737MAX 9 Passenger
IAH
Via PDX
SEA
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
AS1421
AS2421
AS2421
18:19
18:19
18:19
18:19
18:19
18:19
18:19
The timetable & schedule information was updated at 2026-04-21
Via Denver with United Airlines
-
Total flight time: 6h 14m - 12h 13m.
-
Houston is a United Airlines hub.
-
219 flights per week
-
Boeing 737-900 PassengerBoeing 737-800 PassengerBoeing 737MAX 9 Passenger
IAH
Via DEN
SEA
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
UA1874
UA2271
UA2271
05:15
05:15
05:15
05:15
05:15
05:15
05:15
UA1575
UA1424
UA1424
07:20
07:20
07:20
07:20
07:20
07:20
07:20
UA2802
UA1424
UA1424
08:30
08:30
08:30
08:30
08:30
08:30
08:30
UA1450
UA2164
UA2164
09:32
09:32
09:32
09:32
09:32
----
09:32
UA1409
UA2164
UA2164
10:31
10:31
10:31
10:31
10:31
----
10:31
UA2168
UA2013
UA2013
12:33
12:33
12:33
12:33
12:33
12:33
12:33
UA1246
UA1007
UA1007
15:00
15:00
15:00
15:00
15:00
15:00
15:00
UA470
UA360
UA360
16:21
16:21
16:21
16:21
16:21
16:21
16:21
UA1654
UA2651
UA2651
18:19
----
18:19
18:19
18:19
----
18:19
The timetable & schedule information was updated at 2026-04-21
Via Dallas with American Airlines
-
Total flight time: 6h 25m - 8h 38m.
-
One World Alliance
-
207 flights per week
IAH
Via DFW
SEA
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
AA2551
AA707
AA707
05:00
05:00
05:00
05:00
05:00
05:00
05:00
AA700
AA767
AA767
06:02
06:02
06:02
06:02
06:02
06:02
06:02
AA3002
AA717
AA717
07:00
07:00
07:00
07:00
07:00
07:00
07:00
AA3193
AA757
AA757
09:28
09:28
09:28
09:28
09:28
----
09:28
AA1916
AA727
AA727
10:37
10:37
10:37
10:37
10:37
10:37
10:37
AA3591
AA727
AA727
11:24
11:19
11:24
11:24
11:24
11:24
11:24
AA2512
AA2009
AA2009
14:04
----
14:04
14:04
14:04
14:04
14:04
AA3533
AA2009
AA2009
----
14:04
----
----
----
----
----
AA3583
AA2003
AA2003
16:16
16:16
16:16
16:16
16:16
16:16
16:16
AA1929
AA2411
AA2411
18:50
----
----
----
----
----
----
AA1929
AA1078
AA1078
----
----
----
18:50
----
----
----
AA1929
AA1339
AA1339
----
----
----
----
18:50
----
----
AA3555
AA1487
AA1487
----
----
18:50
----
----
----
----
AA1929
AA1487
AA1487
----
18:50
----
----
----
----
----
AA1929
AA1080
AA1080
----
----
----
----
----
----
19:00
AA4923
AA1487
AA1487
19:42
----
----
19:42
19:42
19:42
19:42
The timetable & schedule information was updated at 2026-04-21
Via Denver with Frontier