--- title: "$57 Cheap Flights to Diagonal, IA - Expedia" description: "Looking for cheap flights to Diagonal? Many airlines offer no change fee on selected flights and book now to earn your airline miles on top of our rewards! Find great 2026 Diagonal flight deals now!" canonical: "https://www.expedia.com/Cheap-Flights-To-Diagonal.d553248634983391970.Travel-Guide-Flights" language: en-US market: US currency: USD prices_as_of: 2026-11-12T17:19:52Z --- # $57 Cheap Flights to Diagonal, IA [View $57 flight on Fri, Dec 4, 2026](https://www.expedia.com/Flights-Search?leg1=from:EWR,to:DSM,departure:12/4/2026TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:57.00&airProductToken=AQorCikIx2gSAzQzMRjEjQEgw2Qo9%5FOeAzCw9Z4DOEpAAFgBagJERnIESk5FVxIKCAEQARgBKgJHNBgBIgQIARABKAIoAygEMA0) ## Popular airlines to Diagonal [American Airlines](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Diagonal,%20Iowa,%20United%20States%20of%20America,departure:11/26/2026TANYT&leg2=from:Diagonal,%20Iowa,%20United%20States%20of%20America,to:CMH,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) [Delta](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Diagonal,%20Iowa,%20United%20States%20of%20America,departure:11/26/2026TANYT&leg2=from:Diagonal,%20Iowa,%20United%20States%20of%20America,to:CMH,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) [United](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Diagonal,%20Iowa,%20United%20States%20of%20America,departure:11/26/2026TANYT&leg2=from:Diagonal,%20Iowa,%20United%20States%20of%20America,to:CMH,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) [Southwest Airlines](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Diagonal,%20Iowa,%20United%20States%20of%20America,departure:11/26/2026TANYT&leg2=from:Diagonal,%20Iowa,%20United%20States%20of%20America,to:CMH,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) [Alaska Airlines](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Diagonal,%20Iowa,%20United%20States%20of%20America,departure:11/26/2026TANYT&leg2=from:Diagonal,%20Iowa,%20United%20States%20of%20America,to:CMH,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) [Frontier Airlines](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Diagonal,%20Iowa,%20United%20States%20of%20America,departure:11/26/2026TANYT&leg2=from:Diagonal,%20Iowa,%20United%20States%20of%20America,to:CMH,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) [Lufthansa](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:Diagonal,%20Iowa,%20United%20States%20of%20America,departure:11/26/2026TANYT&leg2=from:Diagonal,%20Iowa,%20United%20States%20of%20America,to:CMH,departure:12/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) ### Be in the know Get alerts if flight prices drop or rise\* ### Book smarter Save up to 30% on select hotels after you book a flight\* ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## How much is the cheapest flight to Diagonal? Prices were available within the past 7 days and start at $57 for one-way flights and $91 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select Frontier Airlines flight, departing Tue, Feb 16 from Columbus to Kansas City, returning Tue, Feb 23, priced at $294 Found 9 hours ago](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:MCI,departure:2/16/2027TANYT&leg2=from:MCI,to:CMH,departure:2/23/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:293.78&airProductToken=AQpgCi4IxnISBDE2MTIYgjsgzHAoxbilAzDYuaUDOEVAAFgBagRQQ18xcgdSMjFPWFA0Ci4IxnISBDQxNzUYzHAgzEAowLylAzCAvqUDOEVAAVgBagRQQ18xcgdSMjFPWFA0EgoIARABGAEqAkY5GAEiBAgBEAEoAigDKAQwDQ) Tue, Feb 16 - Tue, Feb 23 · CMH · MCI · Roundtrip [Select United flight, departing Wed, Dec 16 from Columbus to Lincoln, returning Sat, Dec 19, priced at $321 Found 1 day ago](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:LNK,departure:12/16/2026TANYT&leg2=from:LNK,to:CMH,departure:12/19/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:320.40&airProductToken=AQpwCjYI1YIBEgQ1NDgzGII7IK4cKJz7nwMwgvyfAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZLNVBGQk4KNgjVggESBDUzODYYrhwgq1Moxv2fAzC7%5Fp8DOE5AAFgBagoxX2Jhc2ljZWNvcghMRks1UEZCTgpvCjYI1YIBEgQ1NDMyGKtTIK4cKKmaoAMwqJugAzhOQABYAWoKMV9iYXNpY2Vjb3IITEZLNVBGQk4KNQjVggESAzU2NRiuHCCCOyjLnKADMKidoAM4TkAAWAFqCjFfYmFzaWNlY29yCExGSzVQRkJOEgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwCw) Wed, Dec 16 - Sat, Dec 19 · CMH · LNK · Roundtrip [Select American Airlines flight, departing Sat, Dec 12 from Columbus to Cedar Rapids, returning Tue, Dec 15, priced at $321 Found 6 days ago](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:CID,departure:12/12/2026TANYT&leg2=from:CID,to:CMH,departure:12/15/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:320.40&airProductToken=AQpmCjEIwYIBEgQzNjg1GII7IK4cKIPLnwMw6cufAzhCQABYAWoFQkFTSUNyCE5XRldVTkJWCjEIwYIBEgQ0OTk2GK4cIIIaKInNnwMw3s2fAzhCQAFYAWoFQkFTSUNyCE5XRldVTkJWCmYKMQjBggESBDYyMzcYghogrhwoivGfAzDq8Z8DOEJAAFgBagVCQVNJQ3IITldGV1VOQlYKMQjBggESBDYyNDgYrhwggjsomPKfAzD%5F8p8DOEJAAVgBagVCQVNJQ3IITldGV1VOQlYSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAL) Sat, Dec 12 - Tue, Dec 15 · CMH · CID · Roundtrip [Select Delta flight, departing Wed, Feb 17 from Columbus to Cedar Rapids, returning Sat, Feb 20, priced at $331 Just found](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:CID,departure:2/17/2027TANYT&leg2=from:CID,to:CMH,departure:2/20/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:330.41&airProductToken=AQpuCjUIxJgBEgQzODA0GII7IMx8KJK9pQMwmb6lAzhFQABYAWoJTUFJTkJBU0lDcghWRldOSDNCUQo1CMSYARIEMzkzMhjMfCCCGijfvqUDMKu%5FpQM4RUABWAFqCU1BSU5CQVNJQ3IIVkZXTkgzQlEKbgo1CMSYARIEMzk1MhiCGiDMfCi936UDMIvgpQM4RUAAWAFqCU1BSU5CQVNJQ3IIVkZXTkgzQlEKNQjEmAESBDM3ODYYzHwggjsolOGlAzCR4qUDOEVAAVgBaglNQUlOQkFTSUNyCFZGV05IM0JREgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) Wed, Feb 17 - Sat, Feb 20 · CMH · CID · Roundtrip [Select Southwest Airlines flight, departing Wed, Dec 2 from Columbus to Des Moines, returning Sat, Dec 5, priced at $343 Found 14 hours ago](https://www.expedia.com/Flights-Search?leg1=from:CMH,to:DSM,departure:12/2/2026TANYT&leg2=from:DSM,to:CMH,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:342.39&airProductToken=AQpiCi8I15wBEgQxNzE4GII7IOywASj-4J4DMMThngM4VkAAWAFqA1dHQXIHVkRBVk4yRgovCNecARIEMjE3MhjssAEgw2QogOKeAzDV4p4DOFZAAVgBagNXR0FyB1ZEQVZOMkYKYQouCNecARIDNzAwGMNkIOywASiFgJ8DMNqAnwM4VkAAWAFqA1dHQXIHVkRBVk4yRgovCNecARIEMTc1OBjssAEggjsoqoGfAzD1gZ8DOFZAAVgBagNXR0FyB1ZEQVZOMkYSCggBEAEYASoCV04YASIECAEQASgCKAMoBDAB) Wed, Dec 2 - Sat, Dec 5 · CMH · DSM · Roundtrip ## Book with confidence ### Tips to find the cheapest flights to Diagonal #### The cheapest day to fly Get started finding a cheap flight to Diagonal on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you. #### The cheapest month to fly January is the cheapest month to fly to Diagonal. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to Diagonal. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute. #### The most affordable time to book a flight Typically, a Sunday can be the cheapest time to book a flight to Diagonal, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation. #### The cheapest round-trip tickets to Diagonal The lowest price for round-trip flights to Diagonal in 2026 starts from $91, while one-way tickets start from from $57\. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to Diagonal. If you have a preferred departure time or airline, you can use the handy filters to customize your search. #### The cheapest airlines flying to Diagonal Allegiant Air, Frontier Airlines, United, Southwest Airlines, Delta, American Airlines are just some of the airlines that can typically offer cheap tickets to Diagonal. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to Diagonal and countless more destinations worldwide. #### The most affordable airports to fly into To view the cheapest airports to fly into for Diagonal, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to Diagonal. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia. #### Save with a package With Expedia's amazing [package deals](https://www.expedia.com/package-deals), you could save hundreds of dollars by booking your Diagonal plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving. #### Date flexibility for the cheapest flights to Diagonal If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to Diagonal. #### Stopover savings The cheapest tickets to Diagonal are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Diagonal. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved. #### Get Expedia's Price Drop Protection Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference\*. This gives you peace of mind that you're getting one of the cheapest flights to Diagonal for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members. *\*Terms apply.* #### Use our Price Tracking feature Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to Diagonal. Simply download the free Expedia app to your smart device and activate Diagonal flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices. #### Book with Expedia As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to Diagonal. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too. *Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages.* ## Travel information | Destination city name | Kansas City | | ----------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Kansas City International Airport | | Destination airport IATA code | MCI | | Airlines serving | American Airlines, Delta, United, Southwest Airlines, Alaska Airlines, Frontier Airlines, Lufthansa, British Airways, KLM, Air Canada, Air France, Iberia, Finnair, Virgin Atlantic, Aer Lingus, Brussels Airlines, Turkish Airlines, WestJet, Allegiant Air, SAS, Copa, Qatar Airways, Swiss International Air Lines, Korean Air, LATAM Airlines Group, Japan Airlines, Avianca, Aeromexico, All Nippon Airways, Starlux Airlines, Royal Jordanian, Emirates, Qantas Airways, Air New Zealand, GOL Linhas Aereas S.A., EL AL Israel Airlines | | Popular airline | American Airlines | | Roundtrip price | $294 | ## Trending flights to Diagonal Prices were available within the past 7 days and start at $57 for one-way flights and $91 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select Frontier Airlines flight, departing Mon, Jan 18 from Denver to Omaha, returning Wed, Jan 20, priced at $91 Found 6 days ago](https://www.expedia.com/Flights-Search?leg1=from:DEN,to:OMA,departure:1/18/2027TANYT&leg2=from:OMA,to:DEN,departure:1/20/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:90.60&airProductToken=AQowCi4IxnISBDE4NzQYg2kgjgMor%5FGiAzCL8qIDOEVAAFgBagRQQ18xcgdaMjFOWFMzCjAKLgjGchIEMTEyNxiOAyCDaSiSiaMDMPiJowM4RUAAWAFqBFBDXzFyB1oyMVhYUzMSDAgBEAEYASoCRjkyABgBIgQIARABKAIoAygEMA0) Mon, Jan 18 - Wed, Jan 20 · DEN · OMA · Roundtrip \*Available to One Key members.