Cheap Round Trip Flights — Compare Round Trip Airfare Deals
Booking cheap round trip flights shouldn’t feel like a coin toss. Nine times out of ten, one round trip ticket costs less than two separate one-way fares on the same route — so you lock in your outbound and your return in a single booking, at a single price, and get straight to the fun part. At CheapOair, we compare round trip airfare deals across 500+ airlines, so you see our lowest fare for your route, your dates, and your budget in one quick search.
Why Book Round Trip Flights Instead of One Way?
Book the outbound and return together and you tend to save on the base fare, skip juggling two reservations, and travel on one confirmation number. For most fixed-date trips — a wedding, a work event, a week at the beach — that makes a round trip the cheaper, simpler call.
That said, one way isn’t always the villain. On some budget carriers, or when your return date is genuinely up in the air, mixing two one-way tickets can win. That’s exactly why it pays to compare both before you buy. If your plans are firm, go round trip; if they’re not, check our one way flights and weigh the difference. Either way, you can book flights in a couple of taps.
How to Find Cheap Round Trip Flights
A little strategy goes a long way. These are the moves that consistently shave dollars off round trip tickets:
- Be flexible with your dates. Shifting your departure or return by a day or two can change the fare more than any other single factor. Use flexible-date search to spot our cheapest days across a whole month.
- Fly midweek. Tuesday, Wednesday, and Saturday departures are often lighter and cheaper than Friday and Sunday.
- Set a fare alert. Not ready to book? Get notified the moment your round trip route drops in price.
- Compare nearby airports. A second airport an hour away can cut the round trip fare.
- Consider red-eye or early departures. Quieter flights are usually cheaper — browse red eye flights if you don’t mind an early alarm.
- Bundle flight and hotel. Booking them together typically saves more versus buying separately.
- Pack light and use your points. Skip checked-bag fees where you can, and redeem card rewards or ClubMiles to bring the total down further.
- Booking last-minute? It’s still doable — see current last minute flight deals before fares climb.
When Is the Best Time to Book Round Trip Flights?
Timing is where a lot of travelers overpay. Historically, Tuesday and Wednesday tend to be the cheapest days to buy — airlines often launch sales early in the week and rivals match by midweek. For the trip itself, midweek and Saturday departures usually beat weekend peaks.
On how far ahead to book:
- Domestic round trips: book roughly 1–3 months out for the best window.
- International round trips: aim for 2–6 months ahead, longer for peak summer and holidays.
- Flexible traveler? Occasional last-minute gems appear within two weeks on routes with unsold seats.
Also steer clear of the obvious crush periods — Thanksgiving, Christmas, and spring break push fares up and planes get full. Travel just before or after the peak and the same round trip can cost noticeably less.
Round Trip Flights by Cabin & Traveler
However you fly, there’s a round trip fare for it. Compare business class and first class flights for extra room up front, or keep it simple with economy airline tickets. You can also filter round trip flights by carrier and select from more than 500+ airlines.
Popular Round Trip Destinations
Not sure where to go yet? These are the routes travelers book round trip most — warm-weather escapes, big-city breaks, and long-haul favorites alike.
Domestic favorites include Las Vegas, Orlando, Los Angeles, and Miami — think the Strip and desert day-trips, theme-park country, beaches and Hollywood, and South Beach nightlife. Going farther? London, Paris, Cancun, and Tokyo round out the international round trip favorites, from West End theatre and Louvre queues to Riviera Maya resorts.
Book Cheap Round Trip Flights Today
Ready to lock it in? Enter your cities and dates above to compare cheap round trip flights and round trip airfare deals across 500+ airlines — or call our travel experts 24/7. Book your round trip tickets, earn ClubMiles as you go, and start the countdown to takeoff.
Cheap Round Trip Flights — FAQs
Are round trip flights cheaper than one way?
Usually, yes. Airlines tend to price a round trip lower than two separate one-way tickets on the same route, since they capture both legs in one sale. If your dates are fixed, booking round trip is almost always the cheaper and simpler option.
What is the cheapest day to book round trip flights?
Tuesday and Wednesday are typically our cheapest days to buy. Airlines often release sales early in the week and competitors match by midweek, so shopping then can get you a lower round trip airfare.
What are the cheapest days to fly round trip?
As per historical data, midweek departures — Tuesday, Wednesday, and often Saturday — are usually cheaper than Friday and Sunday.
How far in advance should I book round trip flights?
For domestic trips, 1–3 months ahead is the sweet spot. For international round trips, aim for 2–6 months in advance — and even earlier for peak summer and holiday travel.
Can I book a round trip flight with two different airlines?
Yes. Many round trip itineraries combine carriers on the outbound and return, and CheapOair shows these mixed-airline options automatically when they’re the better deal. You still book them together in one transaction.
Do round trip flights have to return to the same city?
Not always. A standard round trip returns to your origin, but you can also book an “open-jaw” trip that flies you home from a different city — handy if you’re touring more than one destination.
What is an open-jaw round trip ticket?
An open-jaw is a round trip where one leg differs — for example, fly into Rome and home out of Paris. It’s priced like a round trip and is often cheaper than two one-ways for multi-city travel.
Is it cheaper to book round trip or two one-way tickets?
For most fixed-date trips, a single round trip ticket is cheaper. On some budget airlines or flexible itineraries, two one-ways can win — so compare both on CheapOair before you book.
What is the cheapest month to fly round trip?
It varies by route, but off-peak windows like late January, February, and early fall usually bring the lowest round trip airfares. Summer and December holidays are the priciest — travel just outside them to save.
Can I change or cancel a round trip flight?
It depends on the fare rules of your ticket. Many round trip fares allow changes or cancellations (sometimes for a fee), and CheapOair offers convenient online options plus 24/7 support to help you manage it.
Can I do a one-day round trip flight?
Yes — a same-day round trip is possible on many short-haul routes, and it’s popular for quick business trips. Book an early outbound and a late return to get the most out of your day.
How do I find the lowest round trip airfare on CheapOair?
Use the search tool above to compare cheap round trip flights across 500+ airlines, turn on fare alerts for your route, and stay flexible with nearby airports and dates. Bundling a hotel can lower your total even more.
