Cheap flights from London Heathrow Airport to Duluth from £698

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DLH
23 Jul — 30 Jul1
1 adult

Cheap flight deals from Heathrow to Duluth

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Duluth (DLH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 July 2025.

Round-trip from

£698

Popular in

January

Cheapest in

February

Average price

£897
United Airlines
  • United Airlines
  • 1/9-8/9
  • 4 total stops
  • 66h 40m total
  • London to Duluth
Highest demand for flights based on searches. 17% potential increase in price (£163 potential increase over avg. return price).
Cheapest flight prices on average. 8% potential price decrease (£61 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Heathrow to Duluth

Cheapest flights from Heathrow to Duluth
Explore the most affordable flight options available from Heathrow to Duluth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2025.

Mon 1/907:25LHR - DLH
2 stops33h 20mUnited Airlines
Mon 8/915:10DLH - LHR
2 stops33h 20mUnited Airlines
Deal found 18/7£698
Mon 1/920:55LHR - DLH
2 stops28h 26mVirgin Atlantic
Mon 8/910:55DLH - LHR
2 stops37h 30mVirgin Atlantic
Deal found 18/7£766
Wed 6/808:40LHR - DLH
2 stops14h 43mKLM
Wed 27/816:19DLH - LHR
1 stop14h 51mKLM
Deal found 15/7£1,127
Wed 6/808:30LHR - DLH
1 stop19h 30mAir Canada
Wed 27/811:20DLH - LHR
1 stop18h 25mAir Canada
Deal found 15/7£1,147

Cheapflights Fare Finder

Customise your flight search to find flights from Heathrow to Duluth 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 18 July 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Duluth that are best for you.

Fly from

Heathrow

Fly to

Duluth

Route

Depart

Return

Price

LondonDuluth

LHR - DLH

LHRDLH

London Heathrow

Mon 1/9

07:25-10:45

2 stops33h 20m

Duluth Intl

Mon 8/9

15:10-06:30

2 stops33h 20m

£698

LondonDuluth

LHR - DLH

LHRDLH

London Heathrow

Mon 1/9

20:55-19:21

2 stops28h 26m

Duluth Intl

Mon 8/9

10:55-06:25

2 stops37h 30m

£766

LondonDuluth

LHR - DLH

LHRDLH

London Heathrow

Wed 6/8

08:40-17:23

2 stops14h 43m

Duluth Intl

Wed 27/8

16:19-13:10

1 stop14h 51m

£1,127

LondonDuluth

LHR - DLH

LHRDLH

London Heathrow

Wed 6/8

08:30-22:00

1 stop19h 30m

Duluth Intl

Wed 27/8

11:20-11:45

1 stop18h 25m

£1,147

LondonDuluth

LHR - DLH

LHRDLH

London Heathrow

Tue 19/8

14:10-19:21

2 stops35h 11m

£869

LondonDuluth

LHR - DLH

LHRDLH

London Heathrow

Thu 28/8

12:25-22:46

1 stop16h 21m

£1,808

LondonDuluth

LHR - DLH

LHRDLH

London Heathrow

Tue 19/8

12:25-10:15

1 stop27h 50m

£2,105

Flights are sorted by cheapest return flights first.

Deals found on 17/7

Best time to book a flight from Heathrow to Duluth

Have a flexible travel schedule? Discover the best time to fly to Duluth from Heathrow 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.

Reviews of airlines servicing Duluth

Get insights into the airlines that provide service to Duluth. 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 Duluth. Reviews last updated 18 July 2025.
Read reviews from past customers who have flown with Delta, KLM, andUnited Airlines from London Heathrow Airport to Duluth. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
8.0
Very Good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Colin,Sept 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Duluth. 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 into for flights to Duluth from London Heathrow?

    Duluth Intl (DLH) is the airport you will fly into if you book a flight from London Heathrow to Duluth. You should not have trouble finding flights to Duluth Intl from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Duluth airport from London Heathrow. It is only a 5.8 mi journey from Duluth Intl (DLH) to Duluth’s city center.

  • What are the cheapest airlines flying from London Heathrow Airport to Duluth round-trip?

    Our cheapest airline available from London Heathrow Airport to Duluth is United Airlines. Our recent data shows that you can find tickets from as low as £698 on this airline. Additional options worth looking into are Virgin Atlantic and KLM, starting at £766 and £1,127 round-trip.

  • What are the cheapest airlines to fly from London Heathrow Airport to Duluth one-way?

    £869 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on KLM and Delta, with prices starting from £1,808 and £2,105, respectively.

  • Can I find deals for flights from Heathrow to Duluth that include hotel bookings?

    Yes. In addition to deals on Heathrow to Duluth flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Duluth?

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

  • Can I find deals for business class flights from Heathrow to Duluth?

    Yes. Cheapflights offers flight deals from Heathrow to Duluth 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

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Top airline flying from Heathrow to Duluth

Discover the top airline that operate flights from Heathrow to Duluth. 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 858,174 searches. Data last updated 18 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£604Average£1,014FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

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Yes, Cheapflights offers price alerts on Heathrow to Duluth flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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