How long is the flight from St. Louis to Northern Ireland?

Departing from St. Louis to Northern Ireland will take you 16h 02m. There are 3893 mi between St. Louis and Northern Ireland.

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.

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).

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

When flying from St. Louis to Northern Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

£465+ Flights from St. Louis to Northern Ireland

Cheap flight deals from St. Louis to Northern Ireland

Enter your travel dates to find the best prices.

Best flights from St. Louis to Northern Ireland
Discover carefully curated flight deals from St. Louis to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 dezembro 2025.

sáb 24/118:43STL - BHD

2 stops16h 02mBritish Airways

sáb 31/111:35BHD - STL

2 stops17h 24mBritish Airways

Deal found 10/12£465

sex 24/419:03STL - BHD

2 stops14h 27mAmerican Airlines

seg 4/509:50BHD - STL

2 stops17h 58mAmerican Airlines

Deal found 10/12£621

seg 12/117:04STL - BHD

2 stops17h 01mBritish Airways

ter 20/111:25BHD - STL

2 stops17h 34mBritish Airways

Deal found 10/12£466

qui 19/318:50STL - BHD

2 stops19h 00mBritish Airways

ter 31/306:35BHD - STL

2 stops22h 47mBritish Airways

Deal found 11/12£496

sex 24/422:00STL - BHD

1 stop11h 30mBritish Airways

seg 4/518:30BHD - STL

1 stop31h 00mBritish Airways

Deal found 10/12£573

sex 24/422:00STL - BHD

1 stop11h 30mBritish Airways

sáb 2/516:15BHD - STL

1 stop33h 15mBritish Airways

Deal found 10/12£610

qua 4/211:05STL - BHD

2 stops21h 10mBritish Airways

dom 8/206:30BHD - STL

2 stops22h 14mBritish Airways

Deal found 10/12£626

sex 24/415:30STL - BFS

2 stops16h 45mMultiple Airlines

seg 4/521:25BFS - STL

3 stops46h 05mMultiple Airlines

Deal found 10/12£1,985

sex 6/206:00STL - BHD

2 stops22h 30mBritish Airways

ter 10/208:45BHD - STL

2 stops19h 59mBritish Airways

Deal found 9/12£626

qua 11/211:05STL - BHD

2 stops23h 30mBritish Airways

dom 15/206:30BHD - STL

2 stops22h 24mBritish Airways

Deal found 9/12£630

sáb 6/613:00STL - BFS

3 stops27h 40mMultiple Airlines

sex 12/619:55BFS - STL

3 stops47h 35mMultiple Airlines

Deal found 11/12£2,111

Last-minute flights from St. Louis to Northern Ireland
Discover last-minute flight deals from St. Louis to Northern Ireland. Data last updated 12 dezembro 2025 and is based on user searches.

seg 12/117:04STL - BHD

2 stops17h 01mBritish Airways

ter 20/111:25BHD - STL

2 stops17h 34mBritish Airways

Deal found 11/12£466

sáb 24/118:43STL - BHD

2 stops16h 02mBritish Airways

sáb 31/111:35BHD - STL

2 stops17h 24mBritish Airways

Deal found 10/12£465

Find flight deals from St. Louis to Northern Ireland

Round-trip from	£465

British Airways
24/1-31/1
4 total stops
33h 26m total
St. Louis to Northern Ireland

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

sáb 24/1

18:43-16:45

2 stops16h 02m

Belfast City

sáb 31/1

11:35-22:59

2 stops17h 24m

£465

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

seg 12/1

17:04-16:05

2 stops17h 01m

Belfast City

ter 20/1

11:25-22:59

2 stops17h 34m

£466

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

qui 19/3

18:50-18:50

2 stops19h 00m

Belfast City

ter 31/3

06:35-23:22

2 stops22h 47m

£496

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

sex 24/4

22:00-15:30

1 stop11h 30m

Belfast City

seg 4/5

18:30-19:30

1 stop31h 00m

£573

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

sex 24/4

22:00-15:30

1 stop11h 30m

Belfast City

sáb 2/5

16:15-19:30

1 stop33h 15m

£610

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

sex 24/4

19:03-15:30

2 stops14h 27m

Belfast City

seg 4/5

09:50-21:48

2 stops17h 58m

£621

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

qua 4/2

11:05-14:15

2 stops21h 10m

Belfast City

dom 8/2

06:30-22:44

2 stops22h 14m

£626

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

sex 6/2

06:00-10:30

2 stops22h 30m

Belfast City

ter 10/2

08:45-22:44

2 stops19h 59m

£626

St. LouisBelfast

STL - BHD

STLBHD

Lambert-St Louis

qua 11/2

11:05-16:35

2 stops23h 30m

Belfast City

dom 15/2

06:30-22:54

2 stops22h 24m

£630

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

sex 24/4

15:30-14:15

2 stops16h 45m

Belfast Intl

seg 4/5

21:25-13:30

3 stops46h 05m

£1,985

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 11 results

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.

Cheapflights Insights

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

No data available for this route at this time. Please check back soon.

Related info for your journey

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.
How long is the flight from St. Louis to Northern Ireland?
Departing from St. Louis to Northern Ireland will take you 16h 02m. There are 3893 mi between St. Louis and Northern Ireland.
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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for St. Louis to Northern Ireland

Direct flights to United Kingdom

Fly with Cheapflights

How does Cheapflights help users find flights from St. Louis to Northern Ireland?

When you search for this flight from St. Louis to Northern Ireland, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Northern Ireland?

Millions of users choose and trust Cheapflights to book the best flight deals from St. Louis to Northern Ireland for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from St. Louis to Northern Ireland with no change fees?

Certainly. Search results for flights to Northern Ireland from St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from St. Louis to Northern Ireland become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Northern Ireland from St. Louis today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from St. Louis to Northern Ireland from £465

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from St. Louis to Northern Ireland

Best flights from St. Louis to Northern IrelandDiscover carefully curated flight deals from St. Louis to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 dezembro 2025.

Discover carefully curated flight deals from St. Louis to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 dezembro 2025.

Find 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 12 dezembro 2025.

Round-trip from

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Northern Ireland that are best for you.

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.

Cheapflights Insights

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

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?

How long is the flight from St. Louis to Northern Ireland?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Northern Ireland?

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Northern Ireland?

Can Cheapflights find flights from St. Louis to Northern Ireland with no change fees?

Can Cheapflights notify me if prices for flights from St. Louis to Northern Ireland become cheaper?

100% Free

Book with Flexibility

Travel Smart

Best flights from St. Louis to Northern Ireland
Discover carefully curated flight deals from St. Louis to Northern Ireland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 dezembro 2025.