Find flights
When to book
FAQs & Tips
Reviews
Deals

SEA

Find cheap United Airlines flights to Seattle from $74

1 adult
0 bags
Sat 6/15
Sat 6/22

Search hundreds of travel sites at once for deals on United Airlines flights to Seattle

In the last 7 days travelers have searched 42,211,976 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Good to know

Low season

January

High season

July

Cheapest flight

$74

Average price round-trip

$934

Good deal round-trip

$840
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 26% increase in price.
Flight from San Francisco to Seattle
(avg. price over the last 2 weeks)
or less

When to book flights with United Airlines to Seattle

Average price per month
Flight prices as travel date approaches

FAQs for flying to Seattle with United Airlines

  • Which other airlines fly to Seattle?

    Along with United Airlines, you can also fly to Seattle with American Airlines, Alaska Airlines, Delta and Alaska Airlines.

  • Which airport do United Airlines flights to Seattle fly into?

    You’ll fly into Seattle/Tacoma Airport when flying to Seattle with United Airlines.

  • Are there any other airlines in Star Alliance that fly to Seattle?

    Unfortunately, there are no other airlines in Star Alliance that fly to Seattle.

United Airlines customer reviews

7.4
GoodBased on 10,946 verified guest reviews
7.7Boarding
8.1Crew
7.2Comfort
7.1Entertainment
6.7Food
Pros +
Cons -
Traveler rating:
Sort by:
R
6.8 Okay
Pros:The crew was excellent - courteous/aware/friendly. The flight, although 2 hours delayed (9;20pm scheduled departure) was pleasant and smooth. Also, the de-boarding process was surprisingly quick.
Cons:A 2 hour delay at 9:20pm at night is unfortunate yet frustrating experience, especially when we moved our flight up due to a travel warning for EWR (ironically enough, our originally scheduled flight (1922 MCO-EWR). I'm giving an overall OK (instead of good) due to the fact that there were no snacks (although I did not want anything, it didn't go unnoticed) and although there was free inflight entertainment for personal devices, I feel the passengers should have been given free internet access - in my opinion, it would have been the appropriate thing to do. In any case, this experience doesn't change my positive opinion of United.
A
4.6 Mediocre
Cons:The first contact in the airport was quite rude when informing me that I had to measure my suitcase for size. I have carried this suitcase on on every airline for over 10 years....the size got smaller and United got $25.00....not happy. There was NO free movies, no access to TV, flight pattern....nothing and it could not be turned off. ONE cookie for a coast-to-coast flight. What happened to United?
A
10.0 Wonderful
Pros:Nice smooth flight
Cons:Everything
A
10.0 Wonderful
On time departure and arrival.
A
7.0 Good
Cons:THe sits where very uncomfortable.
A
2.0 Poor
Cons:Cancelled due to Maintenance. No Communication.
B
8.3 Very good
Pros:Prompt departures, pleasant staff clean plane
A
2.0 Poor
Pros:Everything was good, thanks to all.
Cons:Thanks to crews for safe flight
A
3.3 Poor
Cons:See above.
A
10.0 Wonderful
Pros:Availability of flights out of Chicago
Cons:Availability of flights out of Chicago
Read more about United Airlines

Book Cheap flights with United Airlines to Seattle

Recent round-trip flight deals

6/11Tue
nonstopUnited Airlines
2h 15mSFO-SEA
6/18Tue
nonstopUnited Airlines
2h 24mSEA-SFO
$147
9/4Wed
nonstopUnited Airlines
4h 33mORD-SEA
9/10Tue
nonstopUnited Airlines
4h 05mSEA-ORD
$149
6/26Wed
nonstopUnited Airlines
2h 11mSFO-SEA
7/2Tue
nonstopUnited Airlines
2h 19mSEA-SFO
$152
9/4Wed
nonstopUnited Airlines
4h 33mORD-SEA
9/10Tue
1 stopUnited Airlines
9h 45mSEA-ORD
$154
7/20Sat
nonstopUnited Airlines
2h 07mSFO-SEA
7/23Tue
nonstopUnited Airlines
2h 19mSEA-SFO
$157
6/12Wed
nonstopUnited Airlines
2h 45mLAX-SEA
6/19Wed
nonstopUnited Airlines
2h 46mSEA-LAX
$159
6/3Mon
nonstopUnited Airlines
2h 11mSFO-SEA
6/5Wed
nonstopUnited Airlines
2h 17mSEA-SFO
$160
6/21Fri
nonstopUnited Airlines
2h 11mSFO-SEA
6/26Wed
nonstopUnited Airlines
2h 24mSEA-SFO
$162
6/4Tue
nonstopUnited Airlines
2h 15mSFO-SEA
6/8Sat
nonstopUnited Airlines
2h 24mSEA-SFO
$165
10/5Sat
nonstopUnited Airlines
2h 13mSFO-SEA
10/7Mon
nonstopUnited Airlines
2h 14mSEA-SFO
$167
9/14Sat
nonstopUnited Airlines
4h 37mORD-SEA
9/21Sat
nonstopUnited Airlines
4h 00mSEA-ORD
$168
6/15Sat
nonstopUnited Airlines
2h 45mLAX-SEA
6/25Tue
nonstopUnited Airlines
2h 46mSEA-LAX
$168
9/11Wed
nonstopUnited Airlines
4h 37mORD-SEA
9/18Wed
1 stopUnited Airlines
9h 45mSEA-ORD
$171
6/10Mon
nonstopUnited Airlines
2h 11mSFO-SEA
6/11Tue
nonstopUnited Airlines
2h 17mSEA-SFO
$172
5/30Thu
nonstopUnited Airlines
2h 11mSFO-SEA
6/3Mon
nonstopUnited Airlines
2h 18mSEA-SFO
$173
6/3Mon
nonstopUnited Airlines
2h 11mSFO-SEA
6/7Fri
nonstopUnited Airlines
2h 18mSEA-SFO
$175
7/29Mon
nonstopUnited Airlines
2h 12mSFO-SEA
8/1Thu
nonstopUnited Airlines
2h 19mSEA-SFO
$177
6/7Fri
nonstopUnited Airlines
2h 45mLAX-SEA
6/11Tue
nonstopUnited Airlines
2h 47mSEA-LAX
$178
5/29Wed
nonstopUnited Airlines
4h 38mORD-SEA
6/11Tue
nonstopUnited Airlines
3h 58mSEA-ORD
$179
6/6Thu
nonstopUnited Airlines
2h 11mSFO-SEA
6/8Sat
nonstopUnited Airlines
2h 24mSEA-SFO
$181

Search by stops

Search by price

Recent one-way flight deals

7/16Tue
nonstopUnited Airlines
2h 07mSFO-SEA
$74
8/17Sat
nonstopUnited Airlines
4h 40mORD-SEA
$75
6/19Wed
nonstopUnited Airlines
2h 45mLAX-SEA
$80
7/13Sat
nonstopUnited Airlines
2h 12mSFO-SEA
$84
6/3Mon
nonstopUnited Airlines
2h 11mSFO-SEA
$87
6/8Sat
nonstopUnited Airlines
2h 45mLAX-SEA
$89
6/17Mon
nonstopUnited Airlines
2h 11mSFO-SEA
$89
8/17Sat
1 stopUnited Airlines
6h 02mLAX-SEA
$98
6/7Fri
nonstopUnited Airlines
2h 45mLAX-SEA
$99
6/6Thu
nonstopUnited Airlines
2h 11mSFO-SEA
$103
5/30Thu
nonstopUnited Airlines
4h 38mORD-SEA
$105
6/6Thu
nonstopUnited Airlines
2h 11mSFO-SEA
$109
6/30Sun
nonstopUnited Airlines
2h 07mSFO-SEA
$110
5/31Fri
nonstopUnited Airlines
2h 11mSFO-SEA
$112
8/14Wed
1 stopUnited Airlines
6h 44mORD-SEA
$114
6/30Sun
nonstopUnited Airlines
2h 07mSFO-SEA
$114
7/2Tue
nonstopUnited Airlines
2h 45mLAX-SEA
$115
8/21Wed
1 stopUnited Airlines
6h 58mSFO-SEA
$118
6/13Thu
nonstopUnited Airlines
2h 45mLAX-SEA
$119
6/11Tue
nonstopUnited Airlines
6h 13mEWR-SEA
$120

Search by stops

Search by price

Flights to Seattle - United Airlines

Destination:

Seattle/Tacoma Intl (SEA)United States

Return flight deals:

Seattle/Tacoma Intl - United States

Cabin classes:

$174
First Class flights to Seattle
$253
Business Class flights to Seattle
$190
$66

Browse origins:

Browse destinations: