What airlines fly to United States?

Alaska Airlines, Delta and Frontier are the top three most popular airlines that fly to United States from Seattle according to our data. Alaska Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 10 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

What is the most punctual flight time for Seattle to the United States flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Which airline has the best punctuality record on Seattle to the United States flights?

According to our data, SkyWest Airlines have had the least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

How many flights depart from Seattle to United States on average per week?

The number of flights available between Seattle and United States is 2,218 per week as of December 2025. The most frequent departure day is Thu, with 20% of weekly flights leaving on this day.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

What is the cheapest airline that flies from Seattle/Tacoma Intl to United States?

Southwest, Delta, and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to United States

How many flights depart from Seattle to United States on average per day?

As of December 2025, there are 316 flights per day flying from Seattle to United States. The most common time of day flights depart is 7:00AM, with 39% of flights taking off at noon.

How often are flights from Seattle to the United States delayed?

Historically, on average around 15% of flights between Seattle and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 137 minutes.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to United States?

Prices for flights from Seattle/Tacoma Intl Airport to United States are refreshed on a daily basis.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to United States?

As of December 2025, there are 10 operators available to choose from for flights from Seattle/Tacoma Intl Airport to United States.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to United States?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to United States.

What documentation or ID do you need to fly to United States?

The required travel and health documents for your United States trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United States. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$37 Cheap Flights from Seattle to the United States in 2025/26

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:33 pm - 9:08 pm

SEA

LAS

2h 35mnonstop

4:51 pm - 7:47 pm

LAS

SEA

2h 56mnonstop

$67Frontier

Fri, Jan 2 - Fri, Jan 9

6:33 pm - 9:08 pm

SEA

LAS

2h 35mnonstop

2:42 pm - 5:37 pm

LAS

SEA

2h 55mnonstop

$68Frontier

Fri, Jan 2 - Thu, Jan 8

6:54 pm - 10:46 pm

SEA

PHX

2h 52mnonstop

9:00 am - 11:19 am

PHX

SEA

3h 19mnonstop

$94Alaska Airlines

Sun, Jan 11 - Thu, Jan 15

11:50 am - 3:45 pm

SEA

PHX

2h 55mnonstop

6:20 am - 8:40 am

PHX

SEA

3h 20mnonstop

$97Delta

Wed, Jan 14 - Sat, Jan 17

1:55 pm - 4:39 pm

SEA

SAN

2h 44mnonstop

7:00 am - 10:15 am

SAN

SEA

3h 15mnonstop

$119Delta

Mon, Jan 5 - Mon, Jan 12

2:59 pm - 9:17 pm

SEA

SAN

6h 18m1 stop

4:06 pm - 10:09 pm

SAN

SEA

6h 03m1 stop

$128Alaska Airlines

Wed, Jan 7 - Fri, Jan 9

6:00 am - 11:55 am

SEA

DFW

3h 55mnonstop

7:10 am - 9:37 am

DFW

SEA

4h 27mnonstop

$184American Airlines

Fri, Jan 9 - Mon, Jan 12

5:23 am - 11:24 am

SEA

DFW

4h 01mnonstop

3:20 pm - 5:45 pm

DFW

SEA

4h 25mnonstop

$186American Airlines

Fri, Jan 2 - Wed, Jan 14

8:40 am - 7:17 pm

SEA

EWR

7h 37m1 stop

11:31 am - 6:14 pm

EWR

SEA

9h 43m1 stop

$212United Airlines

Wed, Jan 7 - Sat, Jan 10

8:40 am - 7:17 pm

SEA

EWR

7h 37m1 stop

4:29 pm - 10:43 pm

EWR

SEA

9h 14m1 stop

$213United Airlines

Wed, Jan 7 - Fri, Jan 9

United Airlines flights from Seattle to United States

Our best United Airlines deals on Seattle to United States flight tickets

United Airlines

Jan 13

SEA12:24 pmSeattle/Tacoma Intl

2h 59m

LAX3:23 pmLos Angeles

Jan 20

LAX4:15 pmLos Angeles

4h 57m

1 stop

SEA9:12 pmSeattle/Tacoma Intl

$140

Find similar

United Airlines

Dec 14

SEA11:50 pmSeattle/Tacoma Intl

5h 09m

EWR7:59 amNewark

Dec 15

EWR7:25 pmNewark

6h 13m

SEA10:38 pmSeattle/Tacoma Intl

$292

Find similar

United Airlines

Dec 14

SEA7:00 amSeattle/Tacoma Intl

7h 47m

1 stop

EWR5:47 pmNewark

Dec 15

EWR7:25 pmNewark

6h 13m

SEA10:38 pmSeattle/Tacoma Intl

$302

Find similar

Southwest flights from Seattle to United States

Our best Southwest deals on Seattle to United States flight tickets

Southwest

Jan 12

SEA8:45 amSeattle/Tacoma Intl

2h 30m

LAS11:15 amLas Vegas Harry Reid Intl

Jan 14

LAS7:50 pmLas Vegas Harry Reid Intl

2h 45m

SEA10:35 pmSeattle/Tacoma Intl

$71

Find similar

Southwest

Jan 21

SEA8:45 amSeattle/Tacoma Intl

2h 30m

LAS11:15 amLas Vegas Harry Reid Intl

Feb 11

LAS7:50 pmLas Vegas Harry Reid Intl

2h 45m

SEA10:35 pmSeattle/Tacoma Intl

$74

Find similar

Southwest

Feb 4

SEA1:20 pmSeattle/Tacoma Intl

2h 30m

LAS3:50 pmLas Vegas Harry Reid Intl

Feb 9

LAS8:50 pmLas Vegas Harry Reid Intl

2h 50m

SEA11:40 pmSeattle/Tacoma Intl

$83

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Fri 1/2

6:33 pm-9:08 pm

Nonstop2h 35m

Las Vegas Harry Reid Intl

Fri 1/9

4:51 pm-7:47 pm

Nonstop2h 56m

$67

SeattleLas Vegas

SEA - LAS

SEALAS

Seattle/Tacoma Intl

Fri 1/2

6:33 pm-9:08 pm

Nonstop2h 35m

Las Vegas Harry Reid Intl

Thu 1/8

2:42 pm-5:37 pm

Nonstop2h 55m

$68

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sun 1/11

6:54 pm-10:46 pm

Nonstop2h 52m

Phoenix Sky Harbor Intl

Thu 1/15

9:00 am-11:19 am

Nonstop3h 19m

$94

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 1/14

11:50 am-3:45 pm

Nonstop2h 55m

Phoenix Sky Harbor Intl

Sat 1/17

6:20 am-8:40 am

Nonstop3h 20m

$97

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 1/5

1:55 pm-4:39 pm

Nonstop2h 44m

San Diego

Mon 1/12

7:00 am-10:15 am

Nonstop3h 15m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 1/7

2:59 pm-9:17 pm

1 stop6h 18m

San Diego

Fri 1/9

4:06 pm-10:09 pm

1 stop6h 03m

$128

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Fri 1/9

6:00 am-11:55 am

Nonstop3h 55m

Dallas/Fort Worth

Mon 1/12

7:10 am-9:37 am

Nonstop4h 27m

$184

SeattleDallas

SEA - DFW

SEADFW

Seattle/Tacoma Intl

Fri 1/2

5:23 am-11:24 am

Nonstop4h 01m

Dallas/Fort Worth

Wed 1/14

3:20 pm-5:45 pm

Nonstop4h 25m

$186

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Wed 1/7

8:40 am-7:17 pm

1 stop7h 37m

Newark

Sat 1/10

11:31 am-6:14 pm

1 stop9h 43m

$212

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Wed 1/7

8:40 am-7:17 pm

1 stop7h 37m

Newark

Fri 1/9

4:29 pm-10:43 pm

1 stop9h 14m

$213

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to United States

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

Prices

Airlines

Delays

Other information

What is the cheapest month to fly to United States?

In general, September is the cheapest month to fly from Seattle to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $297. If you aren’t able to travel during the month of September, then book flights to United States from Seattle during October instead. Flights to United States in October, while not as cheap as those in September, still average around $297.

What is the cheapest day to depart on your flight to United States?

According to our data, Wednesday is the cheapest day to fly to United States from Seattle. The lowest ticket price found for a Wednesday departure recently was $403. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $543. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

What is the cheapest time of day to depart on your flight to United States?

The cheapest time of day to fly to United States is in the afternoon when flights can be purchased for as low as $371. Try not to purchase tickets in the morning because they tend to be around $482. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Seattle/Tacoma Intl to United States flight route?

Fly from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl for the best Seattle/Tacoma Intl - United States flight prices

How far in advance should I book a flight to United States?

You are more likely to see cheaper flights to United States from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $404 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Seattle for as low as $317 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to United States flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to United States 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 Seattle to United States flights?

No. A direct flight is the cheapest option for a flight between Seattle to United States.

Cheap Seattle to United States flight deals and tips

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

Best Price Found	$69
Fastest flight time	0h 50m
Direct flights	Every day
Airports in United States	2 airports

The best one-way flight to United States from Seattle in the past 72 hours is $69. The best round-trip flight deal from Seattle to United States found on momondo in the last 72 hours is $99.

The fastest flight from Seattle to United States takes 0h 50m

Direct flights go from Seattle to United States every day.

There are 2 airports near United States: Ontario (ONT), Las Vegas Harry Reid Intl (LAS)

Search flight deals

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to United States?
Prices for flights from Seattle/Tacoma Intl Airport to United States are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to United States?
As of December 2025, there are 10 operators available to choose from for flights from Seattle/Tacoma Intl Airport to United States.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to United States?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to United States.
What documentation or ID do you need to fly to United States?
The required travel and health documents for your United States trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United States. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Seattle to United States?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to United States is Boeing 737-800 Passenger/BBJ2 (winglets) (17.13% of total bookings). The next most popular plane models are Airbus A321neo (13.29%), Boeing 737 MAX 9 (10.97%), and Boeing 737-900 (9.85%).

Best airlines flying from Seattle to United States

Compare and see reviews for airlines that fly from Seattle to United States with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $49	Free Cancellation	Rating 5.8 3,092 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $54	Free Cancellation	Rating 6.3 8,158 reviews	Search Spirit Airlines flights
Hawaiian Airlines	PriceFrom $78	Free Cancellation	Rating 7.8 2,815 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $99	Free Cancellation	Rating 7.9 8,009 reviews	Search Delta flights
Southwest	PriceFrom $118	Free Cancellation	Rating 8.0 4,252 reviews	Search Southwest flights
United Airlines	PriceFrom $124	Free Cancellation	Rating 7.4 9,066 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $133	Free Cancellation	Rating 8.0 11,400 reviews	Search Alaska Airlines flights
JetBlue	PriceFrom $141	Free Cancellation	Rating 7.2 2,898 reviews	Search JetBlue flights
Sun Country Air	PriceFrom $162	Free Cancellation	Rating 6.9 332 reviews	Search Sun Country Air flights
American Airlines	PriceFrom $176	Free Cancellation	Rating 7.2 11,044 reviews	Search American Airlines flights

Why use momondo?

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

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

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

Yes. All flights to United States from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Seattle and United States by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Seattle to United States flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Flights to Seattlefrom $56

Cheap flights from Seattle to the United States from $37

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to the United States departing on 1/7. 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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United Airlines flights from Seattle to United States

Our best United Airlines deals on Seattle to United States flight tickets

Southwest flights from Seattle to United States

Our best Southwest deals on Seattle to United States flight tickets

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Use the filters below to find and compare flights from Seattle to the United States that are best for you.

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How to get the cheapest flight ticket from Seattle to United States

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 United States?

What is the cheapest day to depart on your flight to United States?

What is the cheapest time of day to depart on your flight to United States?

The cheapest time of day to fly to United States is in the afternoon when flights can be purchased for as low as $371. Try not to purchase tickets in the morning because they tend to be around $482. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Seattle/Tacoma Intl to United States flight route?

Fly from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl for the best Seattle/Tacoma Intl - United States flight prices

How far in advance should I book a flight to United States?

What cabin class options are available on Seattle/Tacoma Intl to United States flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to United States 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 Seattle to United States flights?

No. A direct flight is the cheapest option for a flight between Seattle to United States.

What is the cheapest airline that flies from Seattle/Tacoma Intl to United States?

Southwest, Delta, and Alaska Airlines are the most popular carriers operating from Seattle/Tacoma Intl to United States

What airlines fly to United States?

How often are flights from Seattle to the United States delayed?

Historically, on average around 15% of flights between Seattle and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 137 minutes.

What is the most punctual flight time for Seattle to the United States flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Seattle to the United States flights?

According to our data, SkyWest Airlines have had the least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

How many flights depart from Seattle to United States on average per day?

As of December 2025, there are 316 flights per day flying from Seattle to United States. The most common time of day flights depart is 7:00AM, with 39% of flights taking off at noon.

How many flights depart from Seattle to United States on average per week?

The number of flights available between Seattle and United States is 2,218 per week as of December 2025. The most frequent departure day is Thu, with 20% of weekly flights leaving on this day.

Cheap Seattle to United States flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in United States

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to United States?

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to United States?

How old do you have to be to fly from Seattle/Tacoma Intl Airport to United States?

What documentation or ID do you need to fly to United States?

What is the most popular plane model from Seattle to United States?

Best airlines flying from Seattle to United States

Compare and see reviews for airlines that fly from Seattle to United States with momondo

Why use momondo?

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

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

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

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

An easier way to manage your United States trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo