Cheap Flights to Keystone: Keystone Flight Deals

View €164 flight on Sat, 1 Nov 2025Opens in a new window

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Cheap round-trip flights to Keystone

Prices were available within the past 7 days and start at €164 for one-way flights and €327 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 1 Nov - Sat, 8 Nov
DTW
Detroit
MSO
Missoula
€327 Return, found 22 hours ago
€327
Return
found 22 hours ago
Select American Airlines flight, departing Sat, 1 Nov from Detroit to Missoula, returning Sat, 8 Nov, priced at €327 found 22 hours ago
Delta
Sat, 1 Nov - Sat, 8 Nov
DTW
Detroit
MSO
Missoula
€327 Return, found 22 hours ago
€327
Return
found 22 hours ago
Select Delta flight, departing Sat, 1 Nov from Detroit to Missoula, returning Sat, 8 Nov, priced at €327 found 22 hours ago
United
Sat, 1 Nov - Sat, 8 Nov
DTW
Detroit
MSO
Missoula
€366 Return, found 22 hours ago
€366
Return
found 22 hours ago
Select United flight, departing Sat, 1 Nov from Detroit to Missoula, returning Sat, 8 Nov, priced at €366 found 22 hours ago
Icelandair
Wed, 28 Jan - Wed, 4 Feb
LHR
London
MSO
Missoula
€763 Return, found 1 day ago
€763
Return
found 1 day ago
Select Icelandair flight, departing Wed, 28 Jan from London to Missoula, returning Wed, 4 Feb, priced at €763 found 1 day ago
Virgin Atlantic
Mon, 3 Nov - Mon, 10 Nov
LHR
London
MSO
Missoula
€863 Return, found 11 hours ago
€863
Return
found 11 hours ago
Select Virgin Atlantic flight, departing Mon, 3 Nov from London to Missoula, returning Mon, 10 Nov, priced at €863 found 11 hours ago

Find the cheapest month to fly from Columbus (CMH) to Missoula (MSO)

February is typically the cheapest month to fly

From €269 - €838 per traveller.

Frequently asked questions

What is the name of Keystone's airport?
Book a flight to Keystone with Expedia and you'll be disembarking at Missoula Intl. Airport (MSO).
What airport is best to fly into Keystone?
A flight to Keystone means landing at Missoula Intl. Airport. Get off the plane, collect your bags and you'll be 72 kilometres from downtown.
How many airlines fly to Keystone?
There are a total of 5 air carriers connecting Keystone to 8 airports globally.
Which airlines fly to Keystone?
Flights into Keystone are typically operated by Delta. The majority of these flights jet off from Salt Lake City, with Delta servicing this route the most often.
How many nonstop flights are there to Keystone?
With 81 nonstop flights running every week, you'll be touching down in Keystone before you have time to say, "Are we there yet?"
Where are the most popular flights to Keystone departing from?
The most popular flights to Keystone set off from Salt Lake City, Seattle and Denver airports.
How long is the flight to Keystone Airport?
Which city you depart from determines how much of the in-flight entertainment you'll get to enjoy. From Salt Lake City to Keystone, the average flight time is 1 hour and 46 minutes. From Seattle it usually takes 1 hour and 16 minutes, and from Denver it's 2 hours and 17 minutes.
How to book the cheapest flight to Keystone?
Don't leave locking in your flight to Keystone until the last moment. That's one trick well-versed jet-setters use to get the best deals. Booking ahead means more choices and more affordable flights. Another good way to pick up the most competitive fare is to research all options. If your destination has more than one airport, research the cost of flying into a less busy terminal. Last but not least, be ready to book quickly if you find an irresistible price. It might not stick around for long! With a bit of know-how and a little good fortune, the perfect airfare will be yours.
Do you have any tips for my flight to Keystone?
We've rounded up all the info you need to make your journey an enjoyable experience. Follow our insider tips and you'll be speeding through the airport and having a blast in Keystone in no time at all. What to pack in your hand luggage:

  • It's simple — first, put in your passport, travel documents, cash and vital medications. Next, you'll want some in-flight entertainment to while away the hours. A juicy novel and a phone crammed with your favourite shows are some fantastic options. If you intend to take a quick nap, a neck pillow and a pair of earplugs will also come in handy. Finally, make room for a toothbrush and some cleansing wipes to ensure you arrive at your destination feeling fresh as a daisy.

Do not pack the following items in your hand luggage:

  • Squeeze all your full-sized bottles of shampoo and hair gel in your checked baggage. Any liquids or gels in your carry-on suitcase larger than 3.4 ounces (100 millilitres) will be confiscated by security. Pointed or sharp objects, like your trusty Swiss Army knife, and dangerous products which are flammable or explosive, such as aerosol cans, spray paint and fuels, are also not allowed.

What to wear on a flight:

  • The aisles of an aircraft are no place for a fashion parade. Wear layers and pick shoes that are flat, enclosed and easy to remove.
  • Deep vein thrombosis (DVT) is a risk on long-haul flights. It's the result of blood clotting due to poor circulation and inactivity, so do some gentle leg and foot exercises in your seat and consider wearing compression socks.

How to get through airport security fast when flying to Keystone?
As seasoned travellers know, the secret is to be organised before you reach the airport security gate. That way, you'll be stepping onto that plane to Keystone in a flash. Follow these helpful tips and get your trip off to a terrific start:

  • Have your ID and travel documents someplace easily accessible. They're the first things you'll be asked to present to airport security.
  • Time to strip down. Well sort of. Your belt, coat, keys and other small items, like your headphones, will be required to go through the X-ray machine. Make the whole process faster by removing them before your turn arrives.
  • All your electronic gadgets, including your phone and tablet, are also required to be scanned separately.
  • Travelling with your favourite hand cream? 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 clear zip-close bag, you're allowed to bring it with you in your carry-on bag.
  • Slip-on shoes are a clever footwear choice as you're less likely to be asked to remove them when passing through security. Boots and other bulky shoes are usually subjected to extra screening.
  • Sharp items are not allowed in the cabin. They'll be seized at security, so pack them safely away in your checked luggage.

Book with confidence

Book with confidence

Expedia.ie is an online travel company that specialises in securing the best prices for flights to Keystone. 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 Keystone. 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 Keystone, or are just on the lookout for the best flights to Keystone, 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 Keystone 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

Travel information

Destination airport
Missoula Intl.
Destination airport IATA code
MSO
Destination city name
Missoula
Return price
€326

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Explore a world of travel with Expedia

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