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Cheap flights from St. Louis to Northern Ireland from £567

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BFS
26 Feb — 5 Mar1
1 adult

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 21 February 2025.

Round-trip from

£619
British Airways
  • British Airways
  • 17/3-21/3
  • 4 total stops
  • 33h 47m total
  • 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 21 February 2025.

Wed 17/918:24STL - BHD
2 stops13h 06mBritish Airways
Wed 1/1010:00BHD - STL
2 stops15h 54mBritish Airways
Deal found 20/2£567
Wed 5/315:45STL - BFS
3 stops25h 05mMultiple Airlines
Sat 8/308:10BFS - STL
3 stops35h 33mMultiple Airlines
Deal found 20/2£952
Tue 15/709:15STL - BHD
2 stops21h 25mMultiple Airlines
Mon 21/707:00BHD - STL
3 stops21h 45mMultiple Airlines
Deal found 20/2£1,237
Sat 31/506:00STL - BHD
3 stops26h 30mAer Lingus
Thu 5/617:55BHD - STL
3 stops31h 51mAer Lingus
Deal found 20/2£1,453

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

Customise 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 858,174 searches. Data last updated 21 February 2025.

Fly from

St. Louis

Fly to

Northern Ireland

Route

Depart

Return

Price

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Mon 17/3

18:29-16:15

2 stops16h 46m

Belfast City

Fri 21/3

08:40-20:41

2 stops17h 01m

£619

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Wed 5/3

15:45-22:50

3 stops25h 05m

Belfast Intl

Sat 8/3

08:10-13:43

3 stops35h 33m

£952

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Tue 15/7

09:15-12:40

2 stops21h 25m

Belfast City

Mon 21/7

07:00-22:45

3 stops21h 45m

£1,237

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

Sat 31/5

06:00-14:30

3 stops26h 30m

Belfast City

Thu 5/6

17:55-19:46

3 stops31h 51m

£1,453

Flights are sorted by cheapest return flights first.

Deals found on 20/2

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 return 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.

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 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

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 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 21 February 2025.
Aer Lingus
7.0
Good
1,070 reviews
Check prices

Entertainment

6.7

Boarding

7.2

Food

6.4

Comfort

7.0

Overall

7.0

Crew

7.9

Reviews

1 / 20

2.0
Mediocre

Anonymous,Sept 2024

IAD - DUB

Movies available were good choices. Seats were extremely uncomfortable, had extreme difficulty exiting seat to get to rest room. This was the bumpiest and roughest plane ride I have ever been on. It felt like the seats were tighter than a few years ago. Food was not very good and the return trip was the absolute worst. Dublin airport had a power outage that caused us to be in lines for 6.5 hours, and we were the last 4 people who made the flight. Also, the landing BOUNCED extremely hard and my husband thought perhaps the wheel was broken off it was so hard.

Aer Lingus
7.0
Good
1,070 reviews
Aer Lingus
7.0
Good
1,070 reviews
Check prices

Entertainment

6.7

Boarding

7.2

Food

6.4

Comfort

7.0

Overall

7.0

Crew

7.9

Reviews

1 / 20

2.0
Mediocre

Anonymous,Sept 2024

IAD - DUB

Movies available were good choices. Seats were extremely uncomfortable, had extreme difficulty exiting seat to get to rest room. This was the bumpiest and roughest plane ride I have ever been on. It felt like the seats were tighter than a few years ago. Food was not very good and the return trip was the absolute worst. Dublin airport had a power outage that caused us to be in lines for 6.5 hours, and we were the last 4 people who made the flight. Also, the landing BOUNCED extremely hard and my husband thought perhaps the wheel was broken off it was so hard.

British Airways
6.6
Okay
6,762 reviews
Aer Lingus
7.0
Good
1,070 reviews
Check prices

Entertainment

6.7

Boarding

7.2

Food

6.4

Comfort

7.0

Overall

7.0

Crew

7.9

Reviews

1 / 20

2.0
Mediocre

Anonymous,Sept 2024

IAD - DUB

Movies available were good choices. Seats were extremely uncomfortable, had extreme difficulty exiting seat to get to rest room. This was the bumpiest and roughest plane ride I have ever been on. It felt like the seats were tighter than a few years ago. Food was not very good and the return trip was the absolute worst. Dublin airport had a power outage that caused us to be in lines for 6.5 hours, and we were the last 4 people who made the flight. Also, the landing BOUNCED extremely hard and my husband thought perhaps the wheel was broken off it was so hard.

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 holiday 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, January is the cheapest month in which you can book a flight from St. Louis to Northern Ireland (average of £67). Flying from St. Louis to Northern Ireland in July is currently the most expensive (average of £90). 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

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