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$1,101+ Cheap flights from St. Louis (STL) to Northern Ireland

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BFS
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
1 adult, Economy
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Cheap flight deals from St. Louis to Northern Ireland

Keep the following information in mind while searching for St. Louis to Northern Ireland flight deals. Data was last updated March 3, 2025.

Round-trip from

$1,101
(oojo)
From Lambert-St Louis to Northern Ireland
Search Deals

Find flight deals from St. Louis to Northern Ireland

Cheapest flights from St. Louis to Northern Ireland
Explore the most affordable flight options available from St. Louis to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2025.

This oojo deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/147:59 pmSTL - BHD
2 stops15h 31mBritish Airways
Mon 7/217:30 pmBHD - STL
2 stops31h 01mBritish Airways
Deal found 3/3$1,101
This KLM deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/236:14 pmSTL - BHD
2 stops16h 41mKLM
Sun 5/256:30 amBHD - STL
2 stops16h 05mKLM
Deal found 3/2$1,201
This Mytrip deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1712:00 pmSTL - BFS
3 stops22h 15mMultiple Airlines
Thu 4/248:20 amBFS - STL
3 stops19h 52mMultiple Airlines
Deal found 3/3$1,324
This Booking.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/159:15 amSTL - BHD
2 stops29h 55mMultiple Airlines
Mon 7/217:00 amBHD - STL
3 stops21h 45mMultiple Airlines
Deal found 3/3$1,396

Find flights from St. Louis to Northern Ireland within your budget

Customize your flight search to find flights from St. Louis to Northern Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 3, 2025.

Fly from

St. Louis

Fly to

Northern Ireland

Route

Depart

Return

Price

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 7/14

7:59 pm-5:30 pm

2 stops15h 31m

Belfast City

Mon 7/21

7:30 pm-8:31 pm

2 stops31h 01m

$1,101

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Fri 5/23

6:14 pm-4:55 pm

2 stops16h 41m

Belfast City

Sun 5/25

6:30 am-4:35 pm

2 stops16h 05m

$1,201

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Thu 4/17

12:00 pm-4:15 pm

3 stops22h 15m

Belfast Intl

Thu 4/24

8:20 am-10:12 pm

3 stops19h 52m

$1,324

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Tue 7/15

9:15 am-9:10 pm

2 stops29h 55m

Belfast City

Mon 7/21

7:00 am-10:45 pm

3 stops21h 45m

$1,396

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

Best time to book a flight from St. Louis to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from St. Louis to Northern Ireland

Get recent, data-driven insights about flights from St. Louis to Northern Ireland including ideal travel times, pricing trends, and more.

What is the cheapest time of day to fly from STL to NIR?

Find hourly flight availability from St. Louis to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Northern Ireland as you normally would.

Rainfall in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Northern Ireland ranges from 2.0 - 3.5 inches per month. October is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Northern Ireland when rainfall is around 2.0 in.

Temperature in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Northern Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated March 3, 2025.
KLM
7.8
Good
1,322 reviews

Entertainment

7.2

Food

7.3

Boarding

7.8

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

KLM
7.8
Good
1,322 reviews
KLM
7.8
Good
1,322 reviews

Entertainment

7.2

Food

7.3

Boarding

7.8

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

British Airways
6.6
Okay
6,742 reviews
KLM
7.8
Good
1,322 reviews

Entertainment

7.2

Food

7.3

Boarding

7.8

Crew

8.4

Overall

7.8

Comfort

7.7

Reviews

1 / 20

8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Northern Ireland?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to Northern Ireland from St. Louis.

  • Can I find deals for flights from St. Louis to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on St. Louis to Northern Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Northern Ireland.

  • Can I find deals for business class flights from St. Louis to Northern Ireland?

    Yes. Cheapflights offers flight deals from St. Louis to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Northern Ireland?

    Currently, February is the cheapest month in which you can book a flight from St. Louis to Northern Ireland (average of $657). Flying from St. Louis to Northern Ireland in June is currently the most expensive (average of $1,189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for St. Louis to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from St. Louis to Northern Ireland

Discover the top 2 airlines that operate flights from St. Louis to Northern Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$658Average$771FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$672Average$1,074FlexibilityNo cancel feeOn-time70%
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