Find flights
When to book
FAQs & Tips
Reviews
Deals

SEA

Find cheap United Airlines flights to Seattle from $75

1 adult
0 bags
Mon 7/1
Mon 7/8

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

In the last 7 days travelers have searched 42,787,818 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

$75

Average price round-trip

$1,296

Good deal round-trip

$888

Good deal one-way

$584
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 Chicago O'Hare Airport to Seattle
(avg. price over the last 2 weeks)
or less
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, Alaska Airlines and Delta.

  • 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 10,762 verified guest reviews
7.2Comfort
7.1Entertainment
7.7Boarding
6.7Food
8.1Crew
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

8/31Sat
nonstopUnited Airlines
2h 52mLAX-SEA
9/3Tue
nonstopUnited Airlines
2h 46mSEA-LAX
$137
10/24Thu
nonstopUnited Airlines
2h 52mLAX-SEA
10/29Tue
1 stopUnited Airlines
5h 48mSEA-LAX
$142
8/17Sat
nonstopUnited Airlines
4h 40mORD-SEA
8/21Wed
nonstopUnited Airlines
4h 01mSEA-ORD
$149
8/17Sat
nonstopUnited Airlines
4h 40mORD-SEA
8/21Wed
1 stopUnited Airlines
9h 45mSEA-ORD
$154
8/15Thu
nonstopUnited Airlines
2h 45mLAX-SEA
8/23Fri
nonstopUnited Airlines
2h 46mSEA-LAX
$157
7/4Thu
nonstopUnited Airlines
2h 45mLAX-SEA
7/9Tue
nonstopUnited Airlines
2h 47mSEA-LAX
$158
7/4Thu
nonstopUnited Airlines
2h 45mLAX-SEA
7/5Fri
nonstopUnited Airlines
2h 47mSEA-LAX
$159
7/5Fri
nonstopUnited Airlines
2h 45mLAX-SEA
7/9Tue
nonstopUnited Airlines
2h 47mSEA-LAX
$165
8/23Fri
1 stopUnited Airlines
6h 38mONT-SEA
8/28Wed
1 stopUnited Airlines
4h 26mSEA-ONT
$176
8/15Thu
nonstopUnited Airlines
2h 45mLAX-SEA
8/23Fri
1 stopUnited Airlines
6h 55mSEA-LAX
$177
8/17Sat
nonstopUnited Airlines
4h 40mORD-SEA
8/26Mon
nonstopUnited Airlines
4h 00mSEA-ORD
$179
8/28Wed
nonstopUnited Airlines
4h 33mORD-SEA
9/10Tue
1 stopUnited Airlines
9h 45mSEA-ORD
$184
8/17Sat
nonstopUnited Airlines
4h 40mORD-SEA
8/26Mon
1 stopUnited Airlines
7h 09mSEA-ORD
$189
8/17Sat
1 stopUnited Airlines
7h 52mORD-SEA
8/21Wed
1 stopUnited Airlines
9h 45mSEA-ORD
$194
11/7Thu
1 stopUnited Airlines
5h 55mLAX-SEA
11/11Mon
nonstopUnited Airlines
2h 48mSEA-LAX
$196
6/15Sat
nonstopUnited Airlines
2h 45mLAX-SEA
7/16Tue
nonstopUnited Airlines
2h 47mSEA-LAX
$197
9/7Sat
nonstopUnited Airlines
4h 37mORD-SEA
9/14Sat
nonstopUnited Airlines
4h 00mSEA-ORD
$199
7/26Fri
nonstopUnited Airlines
2h 45mLAX-SEA
7/28Sun
nonstopUnited Airlines
2h 47mSEA-LAX
$199
6/18Tue
nonstopUnited Airlines
4h 37mORD-SEA
7/2Tue
nonstopUnited Airlines
3h 58mSEA-ORD
$202
8/17Sat
1 stopUnited Airlines
4h 37mONT-SEA
8/24Sat
1 stopUnited Airlines
5h 00mSEA-ONT
$206

Search by stops

Search by price

Recent one-way flight deals

9/1Sun
nonstopUnited Airlines
4h 33mORD-SEA
$75
8/31Sat
nonstopUnited Airlines
2h 52mLAX-SEA
$78
9/1Sun
nonstopUnited Airlines
2h 51mLAX-SEA
$79
6/25Tue
nonstopUnited Airlines
2h 45mLAX-SEA
$80
8/5Mon
nonstopUnited Airlines
2h 42mLAX-SEA
$89
6/20Thu
nonstopUnited Airlines
4h 38mORD-SEA
$105
7/2Tue
1 stopUnited Airlines
6h 07mONT-SEA
$107
9/1Sun
1 stopUnited Airlines
5h 46mLAX-SEA
$108
7/6Sat
1 stopUnited Airlines
6h 17mONT-SEA
$113
6/20Thu
1 stopUnited Airlines
8h 31mORD-SEA
$114
9/3Tue
1 stopUnited Airlines
8h 59mDFW-SEA
$118
6/15Sat
nonstopUnited Airlines
2h 45mLAX-SEA
$119
8/27Tue
1 stopUnited Airlines
4h 35mONT-SEA
$123
9/11Wed
nonstopUnited Airlines
6h 04mEWR-SEA
$129
6/21Fri
nonstopUnited Airlines
4h 38mORD-SEA
$131
7/6Sat
1 stopUnited Airlines
7h 44mSNA-SEA
$132
9/2Mon
nonstopUnited Airlines
4h 33mORD-SEA
$132
8/23Fri
1 stopUnited Airlines
6h 18mLAX-SEA
$133
8/17Sat
nonstopUnited Airlines
6h 11mEWR-SEA
$134
6/17Mon
nonstopUnited Airlines
2h 45mLAX-SEA
$139

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:

$239
First Class flights to Seattle
$253
Business Class flights to Seattle
$291
$64

Browse origins:

Browse destinations: