Cheap Flights to Cosmopolis: Cosmopolis Flight Deals

View €51 flight on Sun, 5 Apr 2026Opens in a new window

Popular airlines to Cosmopolis

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Cheap round-trip flights to Cosmopolis

Prices were available within the past 7 days and start at €51 for one-way flights and €84 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 26 Mar - Mon, 30 Mar
BOI
Boise
SEA
Seattle
€84 Return, found 3 days ago
€84
Return
found 3 days ago
Select Delta flight, departing Thu, 26 Mar from Boise to Seattle, returning Mon, 30 Mar, priced at €84 found 3 days ago
American Airlines
Wed, 22 Apr - Thu, 30 Apr
MCO
Orlando
SEA
Seattle
€191 Return, found 18 hours ago
€191
Return
found 18 hours ago
Select American Airlines flight, departing Wed, 22 Apr from Orlando to Seattle, returning Thu, 30 Apr, priced at €191 found 18 hours ago
United
Sat, 2 May - Tue, 12 May
MCO
Orlando
SEA
Seattle
€244 Return, found 1 day ago
€244
Return
found 1 day ago
Select United flight, departing Sat, 2 May from Orlando to Seattle, returning Tue, 12 May, priced at €244 found 1 day ago
Icelandair
Fri, 6 Mar - Sun, 8 Mar
DUB
Dublin
SEA
Seattle
€420 Return, found 3 hours ago
€420
Return
found 3 hours ago
Select Icelandair flight, departing Fri, 6 Mar from Dublin to Seattle, returning Sun, 8 Mar, priced at €420 found 3 hours ago
Condor
Thu, 5 Mar - Mon, 9 Mar
VIE
Vienna
SEA
Seattle
€420 Return, found 3 days ago
€420
Return
found 3 days ago
Select Condor flight, departing Thu, 5 Mar from Vienna to Seattle, returning Mon, 9 Mar, priced at €420 found 3 days ago

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

October is typically the cheapest month to fly

From €118 - €187 per traveller.

Frequently asked questions

What is the name of Cosmopolis' airport?
Seattle - Tacoma Intl. Airport (SEA) is the main airport in Cosmopolis.
How many airlines fly to Cosmopolis?
Cosmopolis is serviced by 38 airlines from 124 airports around the world.
Which airlines fly to Cosmopolis?
In general, travellers choose to fly with Alaska Airlines, Delta and American Airlines when heading off to Cosmopolis. The largest number of these flights arrive from Los Angeles, with Alaska Airlines flying this route the most.
How many nonstop flights are there to Cosmopolis?
With roughly 3,404 nonstop flights each week, you'll be touching down in Cosmopolis before you can ask, "Are we there yet?"
Where are the most popular flights to Cosmopolis departing from?
Flights to Cosmopolis departing from Los Angeles, Phoenix and Portland airports are always popular.
How long is the flight to Cosmopolis Airport?
If you're flying to Cosmopolis from Los Angeles, you're looking at a flight duration of 2 hours and 57 minutes. Those taking off from Phoenix can expect to be on the plane for 3 hours and 17 minutes. From Portland it's 1 hour and 5 minutes away.
How to book the cheapest flight to Cosmopolis?
We all know those fortunate jet-setters who manage to grab impossibly cheap plane tickets every time they fly. Would you like to know how to do it for your Cosmopolis holiday? Don't leave it until the very last minute to secure your flight. Another fantastic way to nab the best deal is to shop around. If your destination has several airports, look into the cost of flying into a smaller terminal. Finally, be prepared to secure your seat quickly if you find a great price. It might not be available for long. With a bit of know-how and a little luck, the perfect airfare will be yours.
Do you have any tips for my flight to Cosmopolis?
We've got the lowdown on how to make your journey as pain-free as possible. Follow our top tips and you'll be speeding through the airport and enjoying Cosmopolis before you know it. What to pack in your hand luggage:

  • It's simple — first, pack in your passport, official ID, credit cards and vital medications. Next, you'll want some entertainment to help pass the time. A juicy novel and a laptop filled with your favourite shows are some great options. If you intend to take a quick snooze, a neck pillow and some noise-cancelling headphones will also be useful. Finally, leave some space for a toothbrush and some facial wipes to ensure you hop off the plane feeling fresh as a daisy.

Do not pack the following items in your hand luggage:

  • While the list of restricted items can differ between airlines, the general guide to follow is nothing flammable, sharp or explosive. This includes knives, scissors, fuel and fireworks. Sports equipment like baseball bats, and objects that could injure passengers, such as firearms and swords, can't come on board with you either.

What to wear on a flight:

  • You'll want to choose comfort over style. Prepare for changes in cabin temperature by donning layers, and wear flat, slightly roomy footwear like slip-ons.
  • Deep vein thrombosis (DVT), a blood clot condition caused by prolonged inactivity, can be a risk on long-haul flights. Try to walk around the cabin or do some gentle exercises in your seat to improve your circulation.

How to get through airport security fast when flying to Cosmopolis?
The secret is to be well prepared before you get to airport security. That way, you'll be stepping onto that plane to Cosmopolis in no time at all. Follow these tips and get your trip off to a terrific start:

  • Airport security personnel first need to make sure that you have a valid passport and matching travel documents before anything else. Have them close by, ready for inspection.
  • Time to strip down. Well sort of. Your coat, belt, keys and other items in your pocket, like your headphones, will need to go on a tray through the X-ray machine. Make the whole process faster by removing them as it gets closer to your turn.
  • For just a few moments, you'll have to unplug from the digital world. Your laptop, phone and any other electronic devices also need to go through the scanner.
  • Any liquids or gels, such as shampoo or hairspray, that you want to bring on board need to be in containers no greater than 3.4 ounces (100 millilitres). Also, they all must fit inside a quart-size (one litre), clear zip-lock bag.
  • Choosing your footwear wisely can save you valuable minutes. Boots and bulky shoes are often required to be removed and X-rayed separately. Lightweight sneakers usually aren't.
  • Airlines won't allow any pocket knives or other sharp items in your carry-on luggage. If you need to bring these kinds of items, put them in your checked luggage.

Book with confidence

Expedia.ie is an online travel company that specialises in securing the best prices for flights to Cosmopolis. With Expedia you get highly specialised services, combining the best of technology, in-depth knowledge and the best connections in order to offer great deals to Cosmopolis. Expedia shares your passion for travel and has built the best online travel service that promotes and encourages travel. Whether you are looking for cheap flights to Cosmopolis, or are just on the lookout for the best flights to Cosmopolis, you are sure to find the best deals with Expedia.ie.

"One of the many benefits of booking your flights through Expedia is that we are one of the world’s largest online travel agency, which means we use our collective experience and work tirelessly to bring you the best prices. With Expedia you get a user-friendly internet experience and a dedicated customer support service that ensures that everything goes smoothly. The goal of Expedia is to offer premium services at the lowest price, all at one single place. If you wish to save even more try combing a hotel in Cosmopolis to your flight and create a personalised low cost city break or holiday to your favourite destination. Book early and you could save even more!

If you have an Expedia.ie itinerary number and have a question or concern about your travel plans you can call us on (01) 524 5005 from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends and an Expedia agent will help you.

Travel information

Destination airport
Seattle - Tacoma Intl.
Destination airport IATA code
SEA
Destination city name
Seattle
Return price
€83

Trending flights to Cosmopolis

Prices were available within the past 7 days and start at €51 for one-way flights and €84 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Fri, 6 Mar - Sun, 8 Mar
DUB
Dublin
SEA
Seattle
€420 Return, found 3 hours ago
€420
Return
found 3 hours ago
Select Icelandair flight, departing Fri, 6 Mar from Dublin to Seattle, returning Sun, 8 Mar, priced at €420 found 3 hours ago
*Available to Expedia members.