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Cheap flights from Saint John to London from C$ 484

YSJ — LON
24 Sep — 1 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St John to London

Enter your travel dates to find the best prices.

Cheapest flights from St John to London

Fri 2/104:40 p.m. -
2 stops34h 15m
Sat 10/1012:00 p.m. -
2 stops31h 59m
Deal found 20/8C$ 1,149
Mon 7/94:40 p.m. -
2 stops34h 05m
Fri 11/93:20 p.m. -
2 stops28h 39m
Deal found 24/8C$ 1,150
Thu 1/105:00 a.m. -
2 stops21h 45m
Tue 6/106:00 p.m. -
2 stops25h 59m
Deal found 21/8C$ 1,161
Mon 7/910:45 a.m. -
1 stop20h 00m
Fri 11/911:35 a.m. -
2 stops28h 21m
Deal found 22/8C$ 1,300
Mon 7/94:40 p.m. -
1 stop13h 20m
Fri 11/98:40 a.m. -
2 stops35h 19m
Deal found 20/8C$ 1,314
Fri 2/104:40 p.m. -
1 stop9h 50m
Sat 10/106:00 a.m. -
2 stops21h 51m
Deal found 20/8C$ 1,315
Thu 1/1012:50 p.m. -
1 stop13h 45m
Tue 6/107:30 p.m. -
2 stops48h 29m
Deal found 21/8C$ 1,325
Thu 1/106:55 a.m. -
2 stops21h 00m
Tue 6/1012:40 p.m. -
2 stops14h 35m
Deal found 21/8C$ 1,650
Tue 22/1211:05 a.m. -
2 stops16h 55m
Tue 5/18:35 a.m. -
2 stops18h 49m
Deal found 24/8C$ 2,443

Find flight deals from St John to London

Round-trip from

C$ 1,149

One-way from

C$ 484
United Airlines
  • United Airlines
  • 2/10-10/10
  • 4 total stops
  • 66h 14m total
  • Saint John to London
Search Deals
9/10
  • 9/10
  • 2 total stops
  • 30h 00m total
  • Saint John to London
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Saint John to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Fri 2/10

4:40 p.m.-6:55 a.m.

2 stops34h 15m

London Heathrow

Sat 10/10

12:00 p.m.-3:59 p.m.

2 stops31h 59m

C$ 1,149

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Mon 7/9

4:40 p.m.-6:45 a.m.

2 stops34h 05m

London Heathrow

Fri 11/9

3:20 p.m.-3:59 p.m.

2 stops28h 39m

C$ 1,150

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Thu 1/10

5:00 a.m.-6:45 a.m.

2 stops21h 45m

London Heathrow

Tue 6/10

6:00 p.m.-3:59 p.m.

2 stops25h 59m

C$ 1,161

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Tue 2/2

5:15 a.m.-6:20 a.m.

2 stops21h 05m

London Heathrow

Sun 7/2

12:05 p.m.-10:25 a.m.

2 stops26h 20m

C$ 1,166
Quickest round-trip

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Fri 2/10

4:40 p.m.-6:30 a.m.

1 stop9h 50m

London Heathrow

Sat 10/10

6:00 a.m.-11:51 p.m.

2 stops21h 51m

C$ 1,315

Saint JohnLondon

YSJ Saint John - LGW London Gatwick

YSJLGW

Saint John

Mon 7/9

10:45 a.m.-11:45 a.m.

2 stops21h 00m

London Gatwick

Fri 11/9

3:40 p.m.-11:56 a.m.

2 stops24h 16m

C$ 1,435

Saint JohnLondon

YSJ Saint John - LGW London Gatwick

YSJLGW

Saint John

Thu 1/10

6:55 a.m.-7:55 a.m.

2 stops21h 00m

London Gatwick

Tue 6/10

12:40 p.m.-11:15 p.m.

2 stops14h 35m

C$ 1,650
Cheapest one-way
Quickest one-way

Saint JohnLondon

YSJ Saint John - LGW London Gatwick

YSJLGW

Saint John

Mon 5/10

10:45 a.m.-9:25 a.m.

2 stops18h 40m

C$ 525

Saint JohnLondon

YSJ Saint John - LHR London Heathrow

YSJLHR

Saint John

Mon 5/10

10:45 a.m.-6:50 p.m.

2 stops28h 05m

C$ 637

Saint JohnLondon

YSJ Saint John - LGW London Gatwick

YSJLGW

Saint John

Thu 8/10

6:55 a.m.-9:25 p.m.

3 stops34h 30m

C$ 654

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/8

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from St John to London

Have a flexible travel schedule? Discover the best time to fly to London from St John with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Saint John to London

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

Reviews of airlines servicing London

Check out reviews from past customers who have flown with Air Canada from Saint John to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
11,530 reviews
Check prices

Boarding

7.3

Crew

7.8

Comfort

7.1

Entertainment

6.8

Overall

7.1

Food

6.3

Reviews

1 / 20
8.0
Excellent

Micheline,Aug 2026

YUL - LAX

The wheelchair was offered asa i presented myself, the staff was attentive, friendly and helpful. The check in was quick and i was delivered to my gate in a timely manner. My carryon bag did not fit under the aisle seat, but does fit under the middle seat. I had no access to my carryon as it had to go in the overhead bin. The wheelchair was available as i deplaned. The attendant was very helpful and friendly. I’ve noticed a big improvement in this service during the last few years. Thanks.🙏
Air Canada
7.1
Good
11,530 reviews
Air Canada
7.1
Good
11,530 reviews
Check prices

Boarding

7.3

Crew

7.8

Comfort

7.1

Entertainment

6.8

Overall

7.1

Food

6.3

Reviews

1 / 20
8.0
Excellent

Micheline,Aug 2026

YUL - LAX

The wheelchair was offered asa i presented myself, the staff was attentive, friendly and helpful. The check in was quick and i was delivered to my gate in a timely manner. My carryon bag did not fit under the aisle seat, but does fit under the middle seat. I had no access to my carryon as it had to go in the overhead bin. The wheelchair was available as i deplaned. The attendant was very helpful and friendly. I’ve noticed a big improvement in this service during the last few years. Thanks.🙏

Related info for your journey

  • What airport do you fly from for flights from Saint John to London?

    Located just 15.1 km from the city centre, Saint John is the airport most travellers will use when flying to London from Saint John. Booking flights from Saint John (YSJ) to London should be relatively easy as there are 0 daily outbound flights to London from 1 airline.

  • How long is the flight from Saint John to London?

    Airlines like United Airlines fly from Saint John to London in about 34h 15m. The time it takes to get you to your destination can typically vary by up to . Saint John and London are separated by a distance of 4712 km.

  • Can I find deals for flights from St John to London that include hotel bookings?

    Yes. In addition to deals on St John to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St John to London?

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

  • Can I find deals for business class flights from St John to London?

    Yes. Cheapflights offers flight deals from St John to London 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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Luton
Slough
Marlow
Cobham
Hounslow
Watford
High Wycombe

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Top airline flying from St John to London

AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 1,270AverageC$ 1,448FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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