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Find cheap flights to SeaTac from $29

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to SeaTac departing on 8/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
sex 7/5
sex 7/12

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Good to know

Low season

January

High season

July

Cheapest flight

$29
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 Ontario to Seattle

FAQs - booking SeaTac flights

  • How long is the flight to SeaTac?

    Flights from Phoenix3h 01m
    Flights from Chicago4h 16m
    Flights from San Francisco2h 12m
    Flights from Portland1h 01m
    Flights from Los Angeles2h 53m
  • What is the cheapest flight to Seattle?

    In the last 3 days, the cheapest flight deal to Seattle was found on the route from Ontario, at $29 one-way and $48 return. The most popular connection is from Los Angeles to Seattle and KAYAK users have found round-trip deals for as low as $55 in the last 3 days.

  • Which airlines fly to Seattle?

    Alaska Airlines, Delta, and United Airlines usually have the most frequent connections from United States to Seattle. See the amount of flights per week for popular airlines flying to Seattle.

  • How to fly to SeaTac?

    You cannot fly directly to SeaTac. KAYAK recommends you fly to Seattle/Tacoma Intl (SEA) (0.8 mile from SeaTac). From there you can rent a car or get a taxi.

  • What airports are near SeaTac?

    The closest airport is Seattle/Tacoma Intl (SEA) (0.8 mi). Other nearby airports are Kenmore Air Harbor (KEH) (20.05 mi) or Everett Paine Field (PAE) (31.71 mi). KAYAK recommends you fly to Seattle/Tacoma Intl.

  • How far is Seattle from central Seattle?

    The distance between Seattle and downtown Seattle is 11 miles.

  • What is the name of Seattle’s airport?

    All flights to Seattle land at Seattle. The airport code is SEA,and it can also be referred to as Seattle-Tacoma Intl, Seattle/Tacoma, or Seattle/Tacoma Intl.

  • How does KAYAK find such low prices on flights to SeaTac?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to SeaTac.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to SeaTac?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to SeaTac is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to SeaTac?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to SeaTac with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to SeaTac?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to SeaTac up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to SeaTac

  • There is no major airport in SeaTac. It is instead served by Seattle/Tacoma Intl Airport.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest SeaTac flight deals.

Top 5 airlines flying to SeaTac

Need help choosing which airline to fly with from the United States to SeaTac? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9219 reviews
7.3Food
7.3Entertainment
8.2Boarding
7.9Comfort
8.6Crew
Airline reviews

It was all good until they had a mishandling issue with a couple of our bags but overall it was fine and we got the bags eventually

6.0 GoodDimitri, Jun 2024MCI - SEA
Read more about Alaska Airlines reviews

It was all good until they had a mishandling issue with a couple of our bags but overall it was fine and we got the bags eventually

The flight itself went well, except it left 1.5 hours late, and about 10 of us missed our Alaska Airlines connection by minutes; they wouldn't hold the plane, even though our arrival delay was caused by Alaska. No gluten-free options among the snacks; you had to order meals separately, but there was no consideration for food sensitivities. NO TELEVISION on a flight from Washington, DC to Seattle or from Seattle to Anchorage. I didn't know that ANY airlines offering cross-country flights didn't have screens for entertainment. This alone is a "never again" for me.

I have to eat gluten-free due to celiac disease, but so far no Alaska Air flight has offered a gluten-free option for the snack given out with free drinks. It seems like that wouldn't be too hard to do.

I didn’t know that food needed to be ordered ahead. Please include this in the reservation information. Overall, very good experience.

Full flight where I had another passenger sitting in middle seat who said that he had lost 250 lbs from 500. The stewardess on exiting the flight advise me that I was going to receive a refund. I thought she was talking about another passenger. The stewardess saw that to make him comfortable I had lifted the armrest and flew for 5 hours to Seattle from Reagan DCA with a portion of his body on my seat. I survived. I flight to remember!!!!

the flight was delayed almost 3 hours and not one time was we told that it was delayed or why. I had asked one of the crew members why it was delayed, 20 minutes after the flight was supposed to take off, and was told that they had no idea what was going on and that they had not been told anything. this is FRIGHTENING!!!! No excuse!!

Flights were on time. Check in was fine. Crew members were pleasant.

I would have liked it to have been easier to order food for the flight. My son was not happy with the snack pack I bought him and it was a very long flight for a little boy to go without food.

We all boarded early, that allowed us to leave a little early.

Ground staff at LAX was very helpful. The Alaska lounge food and service is better than most airport lounges. I think the Staff are well trained polite and actually seem happy to work there. Great service Thanks 🙏 Jjk

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

Delta is one of the best airlines I have flown

Flight delayed about 2 hrs so it made it a VERY late night

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Not worth the price of premium class ticket paid, felt more like steerage.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

I had a great flight. Everything went smoothly and the flight arrived early.

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

Terrible. I didn’t fly and I had an important meeting the next day.

Equipment swap led to 2+ hour delay on international flight. And to top it off, boarding took forever.

Wretched scheduling - they got themselves into a critical crew situation and didn’t try to address it until 15 minutes before they had to cancel my flight

They cancelled two flight and got us onto another airline, which was also delayed.

Nothing, terrible travel experience due to weather and maintenance delays and was left stranded in Austin.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

28 hour delay at Fort Worth/Dallas airport, part due to weather which was unavoidable, but various other reasons - no pilot, no fa, mechanical problem, plane too small, too big, crew out of flying time, seat configuration problems.... endless and hourly updates with a different excuse. Finally told us about 3.00 am, that the flight was delayed to hours later.

Experience was bad. 3.5 hour delay for a 2.5 hour trip. There was no r Transparency about the reason for the delay and it was done 30 mins at a time.

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

There were delays on both ends. It made it less than excellent. This plane was great though

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Book Cheap SeaTac Plane Tickets

Recent round-trip flight deals

9/17ter
nonstopFrontier
2h 47mONT-SEA
9/21sáb
nonstopFrontier
2h 37mSEA-ONT
$48
8/6ter
nonstopFrontier
2h 36mONT-SEA
8/14qua
nonstopFrontier
2h 37mSEA-ONT
$52
9/17ter
1 stopAlaska Airlines
7h 29mSFO-SEA
9/17ter
nonstopAlaska Airlines
2h 10mSEA-SFO
$132
8/13ter
1 stopAlaska Airlines
14h 56mSFO-SEA
8/14qua
nonstopAlaska Airlines
2h 14mSEA-SFO
$137
7/9ter
nonstopDelta
2h 05mSFO-SEA
7/16ter
nonstopDelta
2h 18mSEA-SFO
$149
8/21qua
nonstopDelta
2h 05mSFO-SEA
8/24sáb
nonstopDelta
2h 15mSEA-SFO
$153
8/14qua
nonstopUnited Airlines
4h 39mORD-SEA
8/20ter
1 stopUnited Airlines
9h 45mSEA-ORD
$154
8/14qua
nonstopUnited Airlines
4h 39mORD-SEA
8/20ter
nonstopUnited Airlines
4h 00mSEA-ORD
$166
7/16ter
nonstopAmerican Airlines
4h 33mORD-SEA
7/21dom
nonstopAmerican Airlines
4h 08mSEA-ORD
$254
7/10qua
1 stopAmerican Airlines
14h 33mJFK-SEA
7/16ter
1 stopAmerican Airlines
12h 53mSEA-JFK
$265

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Recent one-way flight deals

8/13ter
nonstopFrontier
2h 47mONT-SEA
$29
8/31sáb
nonstopFrontier
2h 47mONT-SEA
$34
8/17sáb
1 stopUnited Airlines
5h 15mONT-SEA
$73
7/16ter
nonstopAlaska Airlines
2h 12mSFO-SEA
$74
10/16qua
nonstopAmerican Airlines
4h 33mORD-SEA
$74
8/17sáb
nonstopDelta
4h 25mORD-SEA
$75
6/25ter
nonstopDelta
2h 15mSFO-SEA
$75
7/27sáb
nonstopAlaska Airlines
2h 08mSFO-SEA
$77
7/6sáb
1 stopUnited Airlines
6h 17mONT-SEA
$110
10/7seg
1 stopAmerican Airlines
8h 06mSFO-SEA
$118

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Last minute flights to SeaTac

Last minute flight, train and bus deals

6/10seg
nonstopFrontier
2h 53mONT-SEA
6/11ter
nonstopFrontier
2h 44mSEA-ONT
$143
6/10seg
multi-stopFrontier
7h 40mONT-SEA
6/25ter
nonstopFrontier
2h 44mSEA-ONT
$169
6/10seg
nonstopAlaska Airlines
4h 15mDFW-SEA
6/10seg
multi-stopAlaska Airlines
9h 55mSEA-DFW
$210
6/10seg
multi-stopAlaska Airlines
24h 25mDFW-SEA
6/11ter
nonstopAlaska Airlines
3h 54mSEA-DFW
$235
6/10seg
nonstopAmerican Airlines
2h 52mLAX-SEA
6/17seg
nonstopAmerican Airlines
2h 55mSEA-LAX
$302
6/10seg
nonstopAmerican Airlines
2h 49mLAX-SEA
7/4qui
nonstopAmerican Airlines
2h 49mSEA-LAX
$337
6/10seg
nonstopDelta
2h 55mLAX-SEA
6/13qui
nonstopDelta
2h 52mSEA-LAX
$382
6/10seg
nonstopDelta
4h 44mORD-SEA
6/17seg
nonstopDelta
3h 58mSEA-ORD
$398
6/10seg
multi-stopUnited Airlines
9h 31mBOS-SEA
6/18ter
multi-stopUnited Airlines
13h 52mSEA-BOS
$451
6/9dom
nonstopUnited Airlines
2h 45mLAX-SEA
6/14sex
nonstopUnited Airlines
2h 46mSEA-LAX
$457

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Flights to SeaTac

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