Cheap flights from the United States to Washington from $43

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Washington departing on 4/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from the United States to Washington

Recent round-trip flight deals from the United States to Washington

Enter your travel dates to find the best prices.
Frontier Logo
2:55 pm - 5:52 pm
LAX
-
SEA
2h 57mnonstop
Frontier Logo
11:12 am - 2:04 pm
SEA
-
LAX
2h 52mnonstop
$76Frontier
Fri, Apr 24 - Sun, Apr 26
Frontier Logo
2:14 pm - 5:09 pm
LAX
-
SEA
2h 55mnonstop
Frontier Logo
6:24 pm - 9:12 pm
SEA
-
LAX
2h 48mnonstop
$77Frontier
Tue, Mar 17 - Wed, Mar 18
Delta Logo
1:20 pm - 6:30 pm
ONT
-
SEA
5h 10m
1 stop
Delta Logo
4:55 pm - 11:51 pm
SEA
-
ONT
6h 56m
1 stop
$117Delta
Wed, Mar 18 - Tue, Mar 24
Delta Logo
5:09 pm - 12:03 am
ONT
-
SEA
6h 54m
1 stop
Delta Logo
4:55 pm - 11:51 pm
SEA
-
ONT
6h 56m
1 stop
$118Delta
Fri, Mar 20 - Tue, Mar 24
United Airlines Logo
10:37 pm - 12:59 am
SFO
-
SEA
2h 22mnonstop
United Airlines Logo
7:12 am - 9:30 am
SEA
-
SFO
2h 18mnonstop
$118United Airlines
Wed, Mar 25 - Mon, Mar 30
United Airlines Logo
8:58 pm - 11:27 pm
SFO
-
SEA
2h 29mnonstop
United Airlines Logo
7:12 am - 9:30 am
SEA
-
SFO
2h 18mnonstop
$123United Airlines
Tue, Apr 7 - Mon, Apr 13
Alaska Airlines Logo
8:42 am - 11:03 am
SFO
-
SEA
2h 21mnonstop
Alaska Airlines Logo
2:43 pm - 11:44 pm
SEA
-
SFO
9h 01m
1 stop
$127Alaska Airlines
Tue, Mar 17 - Tue, Mar 17
Alaska Airlines Logo
3:26 pm - 6:17 pm
ONT
-
SEA
2h 51mnonstop
Alaska Airlines Logo
7:05 am - 9:45 am
SEA
-
ONT
2h 40mnonstop
$128Alaska Airlines
Fri, Apr 24 - Tue, Apr 28
American Airlines Logo
6:35 am - 2:27 pm
EWR
-
SEA
10h 52m
1 stop
American Airlines Logo
11:16 am - 11:00 pm
SEA
-
EWR
8h 44m
1 stop
$217American Airlines
Tue, Apr 14 - Tue, Apr 21
American Airlines Logo
5:59 pm - 12:24 am
EWR
-
SEA
9h 25m
1 stop
American Airlines Logo
11:16 am - 11:00 pm
SEA
-
EWR
8h 44m
1 stop
$222American Airlines
Wed, Mar 25 - Tue, Apr 14

Southwest flights from United States to State of Washington

Our best Southwest deals on United States to State of Washington flight tickets
Southwest
Apr 22
SFO2:50 pmSan Francisco
8h 45m
1 stop
SEA11:35 pmSeattle/Tacoma Intl
Apr 23
SEA11:05 amSeattle/Tacoma Intl
7h 20m
1 stop
SFO6:25 pmSan Francisco
$151
Southwest
Apr 16
SFO6:00 amSan Francisco
11h 20m
1 stop
SEA5:20 pmSeattle/Tacoma Intl
Apr 17
SEA6:15 pmSeattle/Tacoma Intl
5h 55m
1 stop
SFO12:10 amSan Francisco
$156
Southwest
Mar 7
ONT5:40 amOntario
7h 25m
2 stops
SEA1:05 pmSeattle/Tacoma Intl
Mar 17
SEA7:30 amSeattle/Tacoma Intl
5h 55m
1 stop
ONT1:25 pmOntario
$332

Frontier flights from United States to State of Washington

Our best Frontier deals on United States to State of Washington flight tickets
Frontier
Apr 24
LAX2:55 pmLos Angeles
2h 57m
SEA5:52 pmSeattle/Tacoma Intl
Apr 26
SEA11:12 amSeattle/Tacoma Intl
2h 52m
LAX2:04 pmLos Angeles
$76
Frontier
Mar 17
LAX2:14 pmLos Angeles
2h 55m
SEA5:09 pmSeattle/Tacoma Intl
Mar 18
SEA6:24 pmSeattle/Tacoma Intl
2h 48m
LAX9:12 pmLos Angeles
$77
Frontier
May 8
LAX2:45 pmLos Angeles
2h 57m
SEA5:42 pmSeattle/Tacoma Intl
May 10
SEA10:42 amSeattle/Tacoma Intl
2h 48m
LAX1:30 pmLos Angeles
$78

momondo Fare Finder

 
Customize your flight search to find flights from United States to State of Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 26, 2026.
Use the filters below to find and compare flights from the United States to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Fri 4/24

2:55 pm-5:52 pm

Nonstop2h 57m

Seattle/Tacoma Intl

Sun 4/26

11:12 am-2:04 pm

Nonstop2h 52m

$76

Los AngelesSeattle

LAX - SEA

LAXSEA

Los Angeles

Tue 3/17

2:14 pm-5:09 pm

Nonstop2h 55m

Seattle/Tacoma Intl

Wed 3/18

6:24 pm-9:12 pm

Nonstop2h 48m

$77

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Wed 3/18

1:20 pm-6:30 pm

1 stop5h 10m

Seattle/Tacoma Intl

Tue 3/24

4:55 pm-11:51 pm

1 stop6h 56m

$117

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Fri 3/20

5:09 pm-12:03 am

1 stop6h 54m

Seattle/Tacoma Intl

Tue 3/24

4:55 pm-11:51 pm

1 stop6h 56m

$118

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 3/25

10:37 pm-12:59 am

Nonstop2h 22m

Seattle/Tacoma Intl

Mon 3/30

7:12 am-9:30 am

Nonstop2h 18m

$118

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 4/7

8:58 pm-11:27 pm

Nonstop2h 29m

Seattle/Tacoma Intl

Mon 4/13

7:12 am-9:30 am

Nonstop2h 18m

$123

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 3/17

8:42 am-11:03 am

Nonstop2h 21m

Seattle/Tacoma Intl

Tue 3/17

2:43 pm-11:44 pm

1 stop9h 01m

$127

OntarioSeattle

ONT - SEA

ONTSEA

Ontario

Fri 4/24

3:26 pm-6:17 pm

Nonstop2h 51m

Seattle/Tacoma Intl

Tue 4/28

7:05 am-9:45 am

Nonstop2h 40m

$128

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Tue 4/14

6:35 am-2:27 pm

1 stop10h 52m

Seattle/Tacoma Intl

Tue 4/21

11:16 am-11:00 pm

1 stop8h 44m

$217

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Wed 3/25

5:59 pm-12:24 am

1 stop9h 25m

Seattle/Tacoma Intl

Tue 4/14

11:16 am-11:00 pm

1 stop8h 44m

$222

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Washington from

How to get the cheapest flight ticket from United States to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to State of Washington?

The month of October is, on average, the cheapest month to fly to State of Washington from United States, with most prices found around $287. If you aren’t able to travel to State of Washington during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $312.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from United States to State of Washington is on a Friday. Travelers who choose to depart for State of Washington on a Friday will often find tickets for as low as $273. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from United States to State of Washington for around $376.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is in the afternoon when flights can be purchased for as low as $247. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $337 on average. Flights to State of Washington from United States in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest United States to Washington flight route?

Fly from Denver Intl to Spokane for the best United States - Washington flight prices

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $417 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from United States for as low as $349 on momondo.

What cabin class options are available on United States to Washington flights?

There are 4 cabin classes available to choose from on United States to Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United States to State of Washington flights?

No. A direct flight is the cheapest option for a flight between United States to State of Washington.

Cheap United States to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to State of Washington

Best Price Found

$50

Fastest flight time

0h 45m

Direct flights

Every day

Airports in State of Washington

96 airports
The best one-way flight to State of Washington from United States in the past 72 hours is $50. The best round-trip flight deal from United States to State of Washington found on momondo in the last 72 hours is $100.
The fastest flight from United States to State of Washington takes 0h 45m
Direct flights go from United States to State of Washington every day.
There are 96 airports in State of Washington. From United States there are direct flights to Seattle/Tacoma Intl (SEA).
  • When did momondo last update prices for flights from United States to Washington?

    Prices for flights from United States to Washington were last updated today.

  • How many operators does momondo search for flights from United States to Washington?

  • How old do you have to be to fly from United States to Washington?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Washington.

  • What documentation or ID do you need to fly to Washington?

    The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from United States to State of Washington?

Best airlines flying from United States to State of Washington

Compare and see reviews for airlines that fly from United States to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $36Free CancellationRating
7.2
715 reviews
Search Allegiant Air flights
FrontierPriceFrom $47Free CancellationRating
5.7
3,040 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $58Free CancellationRating
6.3
8,492 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $78Free CancellationRating
7.8
2,837 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $89Free CancellationRating
7.9
8,240 reviews
Search Delta flights
SouthwestPriceFrom $97Free CancellationRating
8.0
4,302 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $112Free CancellationRating
8.0
11,961 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $117Free CancellationRating
7.4
9,348 reviews
Search United Airlines flights
JetBluePriceFrom $123Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
Sun Country AirPriceFrom $172Free CancellationRating
6.8
340 reviews
Search Sun Country Air flights

Why use momondo?

Why should I use momondo to find a flight deal from United States to Washington?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United States to Washington. momondo saves you time and could save you money on your trip.

Can I find flights from United States to Washington with flexible booking policies on momondo?

Flights from United States to Washington with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from United States to Washington?

Once all potential United States to Washington flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from United States to Washington right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Washington, momondo offers a useful price alert feature which will track prices for flights to Washington from United States and alert you when they change.

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1 adult
Sat 3/28
Sat 4/4

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