Cheap flights from Chicago O'Hare Intl Airport to Belfast from $280
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Belfast departing on 9/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Belfast Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest day to depart on your flight to Belfast Intl Airport?
The cheapest day to depart on your flight to Belfast Intl Airport is on a Wednesday when prices can be found for as low as $649. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Chicago O'Hare Intl Airport to Belfast Intl Airport for around $938.
What is the cheapest time of day to depart on your flight to Belfast Intl Airport?
In the evening is the cheapest time of day to fly from Chicago O'Hare Intl Airport to Belfast Intl Airport when you can find flight prices for as low as $769. Flying to Belfast Intl Airport in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Belfast Intl Airport is in the afternoon when prices are around $804.
When to book flights from Chicago O'Hare Intl Airport to Belfast Intl Airport
Cheap Chicago O'Hare Intl Airport to Belfast Intl Airport (ORD to BFS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Belfast Intl Airport
How far is Chicago O'Hare Intl to Belfast Intl by plane?
A flight from Chicago O'Hare Intl to Belfast Intl will travel around 3629.9 mi. Flights usually cover this in 11h 40m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Belfast Intl Airport?
Prices for flights from Chicago O'Hare Intl Airport to Belfast Intl Airport were last updated today.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Belfast Intl Airport?
As of June 2025, there is 1 operator available to choose from for flights from Chicago O'Hare Intl Airport to Belfast Intl Airport.
How old do you have to be to fly from Chicago O'Hare Intl Airport to Belfast Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Belfast Intl Airport.
What documentation or ID do you need to fly to Belfast Intl Airport?
The necessary travel and health documents for your Belfast Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Chicago O'Hare Intl Airport to Belfast Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Chicago O'Hare Intl Airport to Belfast Intl Airport is British Airways (100% of total bookings).
Best airlines flying from Chicago O'Hare Intl Airport to Belfast Intl Airport
Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Belfast Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $622 | Free Cancellation | Rating 6.6 7,031 reviews |
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Why should I use momondo to find a flight deal from Chicago to Belfast?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Belfast. momondo saves you time and could save you money on your trip.
Can I find flights from Chicago to Belfast with flexible booking policies on momondo?
Flights from Chicago to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Chicago to Belfast?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from Chicago.
I’m not ready to book a flight from Chicago to Belfast right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Chicago to Belfast now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Belfast and let you know when they change.