Cheap Flights to Union

View ₩149,600 flight on Tue, Oct 28, 2025Opens in a new window

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How much is the cheapest flight to Union?

Prices were available within the past 7 days and start at ₩149,600 for one-way flights and ₩244,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Oct 11 - Tue, Oct 14
ONT
Ontario
SEA
Seattle
₩244,500 Roundtrip, found 1 day ago
₩244,500
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Oct 11 from Ontario to Seattle, returning Tue, Oct 14, priced at ₩244,500 found 1 day ago
Hawaiian Airlines
Wed, Oct 8 - Tue, Oct 14
ONT
Ontario
SEA
Seattle
₩245,600 Roundtrip, found 3 days ago
₩245,600
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Wed, Oct 8 from Ontario to Seattle, returning Tue, Oct 14, priced at ₩245,600 found 3 days ago
American Airlines
Wed, Feb 4 - Sat, Feb 7
LAX
Los Angeles
SEA
Seattle
₩291,100 Roundtrip, found 6 days ago
₩291,100
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Feb 4 from Los Angeles to Seattle, returning Sat, Feb 7, priced at ₩291,100 found 6 days ago
United
Mon, Nov 10 - Wed, Nov 12
ONT
Ontario
SEA
Seattle
₩358,000 Roundtrip, found 4 days ago
₩358,000
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 10 from Ontario to Seattle, returning Wed, Nov 12, priced at ₩358,000 found 4 days ago
Korean Air
Tue, Oct 14 - Mon, Oct 20
ICN
Seoul
SEA
Seattle
₩625,100 Roundtrip, just found
₩625,100
Roundtrip
just found
Select Korean Air flight, departing Tue, Oct 14 from Seoul to Seattle, returning Mon, Oct 20, priced at ₩625,100 just found

Find the cheapest month to fly from Columbus (CMH) to Seattle (SEA)

August is typically the cheapest month to fly

From ₩189,590 - ₩349,064 per traveler.

Frequently asked questions

What is the name of Union's airport?
Seattle - Tacoma Intl. Airport (SEA) is the only airport serving Union.
What airport is best to fly into Union?
Step through the doors of SEA and your Union adventure will have begun! The city's main airport, it's located 64 kilometers from the downtown streets.
How many airlines fly to Union?
There are 38 airlines that fly into Union from 124 worldwide airports.
Which airlines fly to Union?
Most often, travelers fly with Alaska Airlines, Delta and American Airlines when going to Union. The biggest proportion of these flights arrive from Los Angeles, with Alaska Airlines operating this route the most frequently.
How many nonstop flights are there to Union?
Flying to somewhere new is much more straightforward when there aren't any stopovers involved. If you're heading to Union, the awesome news is that there are approximately 3,404 direct flights each week.
Where are the most popular flights to Union departing from?
The most popular flights to Union take off from Los Angeles, Phoenix and Portland airports.
How long is the flight to Union Airport?
If it's Los Angeles you're leaving behind, you'll be in the air for around 2 hours and 57 minutes before you touchdown in Union. Airport to airport from Phoenix generally takes 3 hours and 17 minutes and from Portland, the flight time is 1 hour and 5 minutes.
How to book the cheapest flight to Union?
We all know those fortunate jet-setters who somehow land impossibly cheap airfares whenever they fly. Want to know how to do it for your Union vacation? Don't wait until the last possible moment to secure your flight. Also, shop around and compare your options. If your destination has multiple airports, you may be able to pick up an excellent price by flying into one a little farther out. Finally, be prepared to book quickly if you find a real bargain. It might not stick around for too long! With a bit of know-how and some luck, the ideal airfare will be yours.
Do you have any tips for my flight to Union?
Wherever you're jetting in from, flying can be a pleasurable experience if you prepare well enough. Check out these handy hints that will get your Union vacation started on the right note. What to pack in your hand luggage:

  • The trick to having a worry-free travel experience is to pack in advance. Start with the essentials: passport, travel documents, bank cards and important medications. Next, take on board items that'll help keep you entertained, like some electronic gadgets or a magazine. It's also smart to pack your chargers, a comfy neck pillow and a pair of earplugs. Finally, be sure to chuck in toiletry items like a toothbrush, facial wipes and a spare set of clothes.

Do not pack the following items in your hand luggage:

  • While the list of restricted items differs between airlines, the general rule of thumb is avoid carrying anything sharp, flammable or explosive. This includes screwdrivers, drills, fuels and bleaching agents. Sports equipment like baseball bats, and objects that could harm other people, such as pepper spray and firearms, are also banned from the cabin.

What to wear on a flight:

  • Your goal here is to feel as comfortable as possible. Opt for shoes that are easy to pull on and off, dress in loose, natural-fiber clothing and remember to bring a sweater in case it gets chilly in the cabin.
  • You're probably aware of deep vein thrombosis (DVT), a blood clotting condition caused by prolonged periods of inactivity. To lessen your risk on board, stay hydrated, consider wearing compression socks and keep your feet and legs moving.

How to get through airport security fast when flying to Union?
As savvy travelers know, the secret is to be prepared before you reach the security gate. That way, you'll be stepping onto that plane to Union in next to no time. Follow these tips and get your vacation off to a great start:

  • Have your travel documents and ID within close reach. They're the first items you'll be asked to present to security.
  • Next up is the X-ray machine. Remove anything on you that is likely to beep. This includes items like headphones or earphones, as well as your coat or jacket. They'll need to be placed on the conveyor belt for screening.
  • All electronic gadgets, including your tablet and phone, must also be separately scanned.
  • Can't travel without your favorite perfume or cologne? Not a problem. As long as it's in a container no larger than 3.4 ounces (100 milliliters) and it's stored in a zip-lock bag, you can keep it with you in your carry-on luggage.
  • Slip-on shoes are a practical footwear choice as you're less likely to have to remove them when passing through security. Big boots and heavier-style shoes are usually subjected to extra screening.
  • Sharp or pointed objects (like knives and scissors) are prohibited in the cabin. They'll be confiscated at security, so pack them in your checked bags.

Book with confidence

Book with confidence

Searching for cheap flights to Union? No travel company presents more choices than Expedia if you're looking to compare flights to Union. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Washington. Expedia provides the cheapest flights to many destinations in Washington and you may find even greater savings if you combine your flight with a hotel stay in Union.

Travel information

Travel information

Destination airport
Seattle Paine Field Intl. Airport
Destination airport IATA code
PAE
Destination city name
Seattle Paine Field Intl. Airport
Roundtrip price
₩273,900

Trending flights to Union

Prices were available within the past 7 days and start at ₩149,600 for one-way flights and ₩244,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Fri, Nov 14 - Sat, Nov 15
ICN
Seoul
SEA
Seattle
₩475,900 Roundtrip, just found
₩475,900
Roundtrip
just found
Select Hawaiian Airlines flight, departing Fri, Nov 14 from Seoul to Seattle, returning Sat, Nov 15, priced at ₩475,900 just found

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Explore a world of travel with Expedia

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