A marina with boats docked, a calm water surface, and snow-capped mountains in the background.

Cheap Flights to Union

View ฿2,480 flight on Sat, 5 Sept 2026Opens in a new window

Flight 1

Popular airlines to Union

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Union

Prices were available within the past 7 days and start at ฿2,480 for one-way flights and ฿5,690 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Delta
United
American Airlines
Korean Air
Asiana Airlines

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

From ฿7,343 - ฿12,318 per traveller.

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 kilometres 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, travellers 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 holiday? 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 further 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 holiday 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-fibre 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 travellers 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 holiday 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 favourite perfume or cologne? Not a problem. As long as it's in a container no larger than 3.4 ounces (100 millilitres) 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

Flights to Union

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 Union. Expedia provides the cheapest flights to Union and you may find even greater savings if you combine your flight to Union with a hotel stay. Travellers who are flexible about flight times can benefit from last minute cheap flights to Union.

Expedia is the largest online travel agency which means that Expedia have access to cheap airline tickets. So make sure you check Expedia regularly for these bargain flights because the cheapest airline ticket deals sell out fast.

Expedia is not only free for everyone to use but it quick and easy to use. Find the lowest flight prices guaranteed and book directly through Expedia. Browse through hundreds of cheap flight offers to find the one that suits your budget by simply inputting your travel dates. Expedia will then find the cheapest flights to Union for that period and let you choose your preferred time and airline.

Travel information

Destination airport
Seattle - Tacoma Intl.
Destination airport IATA code
SEA
Destination city name
Seattle
Return price
฿5,690

Trending flights to Union

Prices were available within the past 7 days and start at ฿2,480 for one-way flights and ฿5,690 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Delta
*Available to Expedia members.