$756 Find Cheap Flights from St. Louis to Northern Ireland

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Northern Ireland departing on 10/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Northern Ireland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Northern Ireland, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Northern Ireland, as well as popular online travel agencies
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Cheap Flights from St. Louis to Northern Ireland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Belfast
Belfast2 stops$756
Belfast
Belfast2 stops$756

Book Cheap St. Louis to Northern Ireland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Northern Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Northern Ireland

Sat, Oct 25 - Sat, Nov 1
British Airways Logo
5:09 pm - 11:20 amSTL-BHD
36h 11m2 stops
British Airways Logo
9:15 am - 9:55 pmBHD-STL
41h 40m2 stops
$756British Airways
Find Deal
Sat, Oct 25 - Sat, Nov 1
British Airways Logo
10:23 am - 12:10 pmSTL-BHD
19h 47m2 stops
British Airways Logo
6:35 am - 6:11 pmBHD-STL
16h 36m2 stops
$799British Airways
Find Deal
Mon, Aug 11 - Thu, Aug 14
 Logo
9:15 am - 11:20 amSTL-BFS
20h 05m3 stops
 Logo
8:40 am - 1:32 pmBFS-STL
34h 52m3 stops
$1,283
Find Deal
Mon, Aug 11 - Thu, Aug 14
 Logo
9:15 am - 11:20 amSTL-BFS
20h 05m3 stops
 Logo
10:45 pm - 3:21 pmBFS-STL
22h 36m2 stops
$1,301
Find Deal
Mon, Aug 11 - Thu, Aug 14
 Logo
9:15 am - 11:20 amSTL-BFS
20h 05m2 stops
 Logo
10:45 pm - 3:21 pmBFS-STL
22h 36m2 stops
$1,370
Find Deal
Tue, Aug 12 - Fri, Aug 15
 Logo
4:00 pm - 2:10 pmSTL-BFS
16h 10m3 stops
 Logo
5:25 pm - 7:45 pmBFS-STL
32h 20m3 stops
$1,491
Find Deal
Booking Insights

KAYAK's insights & trends for St. Louis to Northern Ireland flights

Get data-powered insights and trends into flights from St. Louis to Northern Ireland to help you find the cheapest flights, the best time to fly and much more.

How long does a flight from St. Louis to Northern Ireland take?

The duration of a flight to Northern Ireland depends on your arrival airport. The shortest route to Northern Ireland from St. Louis is to Belfast, which takes 17h 39m.


Good to know

Cheapest flight$756
Flight from St. Louis to Belfast City Airport

FAQs - booking Northern Ireland flights

  • How does KAYAK find such low prices on flights from St. Louis to Northern Ireland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Northern Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Northern Ireland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Northern Ireland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Northern Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Northern Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Northern Ireland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Northern Ireland?

    The cheapest time of day to fly to Northern Ireland is generally in the evening, when round-trip flights cost $785 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Northern Ireland is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,429.

Reviews of the top airline flying from St. Louis to Northern Ireland

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Northern Ireland. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Northern Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 10000 reviews
6.5Food
8.0Crew
7.5Boarding
6.9Entertainment
7.2Comfort
Airline reviews

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

6.0 GoodA, Jul 2025JFK - LHR
Read more American Airlines reviews

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

The chicken adobo was a little too spicy but good otherwise. My personal opinion. Movie selection could be improved, too many horror movies. Could add a few more chick flicks! The flight was bumpy at times. We arrived a little early too! Flight attendants friendly.

Again flight was awesome except British Airways lost both gate checked luggage’s. Still missing

really bad they refused to check in luggages that I had purchased, even showing them the transaction receipt from british airways app the staff in miami was MEDIOCRE

British Airways staff are very polite and willing to help.

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

This particular flight wasn't very full at the back, so there were three seats available for spreading out and getting relatively comfortable

There were several issues with this flight. I have flown quite often internationally and I was surprised by the lack of presence of attendants other than meal and drink times. The food was not best but I feel that is the norm. We also had to get off the plane once in London via stairs and bus to the terminal. Anyone who had another flight had to then get another bus to another terminal. This causes me to miss my flight and have to rebook.

Everything you need to know for your flight from St. Louis to Northern Ireland

Information on your arrival and departure airports

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