Portsmouth

$711+ Cheap flights from Detroit (DTT) to Portsmouth, England

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — LHR
May 5 — May 121
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Cheap flight deals from Detroit to Portsmouth

Cheapest flights from Detroit to Portsmouth
Explore the most affordable flight options available from Detroit to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 5, 2026.

This KLM deal was found by Cheapflights users on 4/2. 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.
Thu 11/54:15 pm
DTW
-
SOU
1 stop19h 45m
KLM
Fri 11/138:40 am
SOU
-
DTW
1 stop14h 15m
KLM
Deal found 4/2$1,178
This Virgin Atlantic deal was found by Cheapflights users on 4/2. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/51:30 pm
DTW
-
SOU
2 stops22h 30m
Virgin Atlantic
Fri 11/138:40 am
SOU
-
DTW
2 stops15h 57m
Virgin Atlantic
Deal found 4/2$1,191
This Delta deal was found by Cheapflights users on 4/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:15 pm
DTW
-
SOU
2 stops15h 30m
Delta
Sun 10/119:15 am
SOU
-
DTW
2 stops17h 50m
Delta
Deal found 4/4$1,243
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:15 pm
DTW
-
SOU
1 stop17h 35m
Delta
Wed 4/225:20 pm
SOU
-
DTW
1 stop25h 12m
Delta
Deal found 4/1$1,278
This Ovago deal was found by Cheapflights users on 4/4. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:03 am
DTW
-
SOU
2 stops17h 42m
Multiple Airlines
Sun 10/115:20 pm
SOU
-
DTW
1 stop23h 28m
Multiple Airlines
Deal found 4/4$1,281
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/132:49 pm
DTW
-
SOU
2 stops12h 46m
Delta
Tue 4/215:20 pm
SOU
-
DTW
1 stop25h 12m
Delta
Deal found 4/1$1,282
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:15 pm
DTW
-
SOU
1 stop17h 35m
Delta
Fri 4/249:05 am
SOU
-
DTW
2 stops15h 19m
Delta
Deal found 4/1$1,288

Find flight deals from Detroit to Portsmouth

Keep the following information in mind while searching for Detroit to Portsmouth flight deals. Data was last updated April 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,243
(Delta)

One-way from

$711
(Delta)

Popular in

June

Cheapest in

October

Average price

$1,103
Provider with most accurate pricing for Detroit (DTT)-London (LON) flight deals.
Provider most trusted by Cheapflights users for Detroit (DTT)-London (LON) flights.
From Detroit (DTT) to Portsmouth
One-way flight from Detroit (DTT) to Portsmouth
Highest demand for flights based on searches. 5% potential increase in price ($51 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Average for round-trip flights in April 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit to Portsmouth 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 April 5, 2026.
Use the filters below to find and compare flights from Detroit to Portsmouth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Fri 10/2

12:15 pm-8:45 am

2 stops15h 30m

Southampton Eastleigh

Sun 10/11

9:15 am-10:05 pm

2 stops17h 50m

$1,243

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Fri 10/2

10:40 pm-8:45 am

1 stop29h 05m

Southampton Eastleigh

Sun 10/11

9:15 am-11:48 am

1 stop31h 33m

$1,303

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Fri 4/24

4:05 pm-8:45 am

1 stop11h 40m

Southampton Eastleigh

Mon 5/4

5:20 pm-11:54 am

1 stop23h 34m

$1,328

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Sat 4/25

4:05 pm-8:45 am

1 stop11h 40m

Southampton Eastleigh

Mon 5/4

5:20 pm-1:35 pm

1 stop25h 15m

$1,328

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Thu 4/23

10:20 pm-4:50 pm

1 stop13h 30m

Southampton Eastleigh

Sun 5/3

9:15 am-5:08 pm

1 stop12h 53m

$1,378
Quickest round-trip

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Sat 4/25

4:05 pm-8:45 am

1 stop11h 40m

Southampton Eastleigh

Sun 5/3

9:15 am-5:08 pm

1 stop12h 53m

$1,378

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Sat 4/25

12:20 pm-8:45 am

2 stops15h 25m

Southampton Eastleigh

Sat 5/2

9:15 am-5:08 pm

1 stop12h 53m

$1,382

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Sun 4/19

10:20 pm-8:35 am

1 stop29h 15m

Southampton Eastleigh

Wed 4/29

5:20 pm-1:32 pm

1 stop25h 12m

$8,572

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Mon 4/20

10:20 pm-4:50 pm

1 stop13h 30m

Southampton Eastleigh

Tue 4/28

9:05 am-6:44 pm

2 stops14h 39m

$8,583

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Mon 4/20

9:20 pm-4:50 pm

2 stops14h 30m

Southampton Eastleigh

Mon 4/27

5:20 pm-11:51 am

1 stop23h 31m

$8,591

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Detroit to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Detroit 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.

Cheapflights Insights

Everything you need to know about your flight from Detroit to Portsmouth

What is the cheapest month to book a flight from Detroit to Portsmouth?

Currently, December is the cheapest month in which you can book a flight from Detroit to Portsmouth (average of $275). Flying from Detroit to Portsmouth in February is currently the most expensive (average of $772). 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.

What is the cheapest time of day to fly from DTT to P0R?

Find hourly flight availability from Detroit to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 5, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Detroit to Portsmouth as you normally would.

Weekly flight availability from Detroit to Portsmouth

Explore weekly flight availability from Detroit to Portsmouth. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 5, 2026.

The most flights from DTT to P0R are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Related info for your journey

Find useful and relevant information for your journey from Detroit to Portsmouth. 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 Detroit to Portsmouth?

    Located just 0.6 mi from the city center, Detroit All airports is the airport most travelers will use when flying to Portsmouth from Detroit. Booking flights from All airports (DTT) to Portsmouth should be relatively easy as there are 0 daily outbound flights to Portsmouth from 11 different airlines.

  • How long is the flight from Detroit to Portsmouth?

    Departing from Detroit to Portsmouth will take you 15h 30m. There are 3733 mi between Detroit and Portsmouth. This flight may include one or multiple stops.

  • What are the most reliable airlines from Detroit to Portsmouth?

    The top 3 most reliable airlines when flying from Detroit to Portsmouth are KLM (80%), Air France (80%) and Scandinavian Airlines (80%).

  • What are the cheapest flights from Detroit to Portsmouth?

    While on average a flight from Detroit to Portsmouth is generally $2,507, our data shows the cheapest flight currently is $324. When looking at the most popular route, (Detroit Metropolitan Wayne County - Southampton Eastleigh), you can expect to pay $1,378 for that flight.

  • Can I find deals for flights from Detroit to Portsmouth that include hotel bookings?

    Yes. In addition to deals on Detroit to Portsmouth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Detroit to Portsmouth?

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

  • Can I find deals for business class flights from Detroit to Portsmouth?

    Yes. Cheapflights offers flight deals from Detroit to Portsmouth 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 Detroit to Portsmouth?

    Currently, December is the cheapest month in which you can book a flight from Detroit to Portsmouth (average of $275). Flying from Detroit to Portsmouth in February is currently the most expensive (average of $772). 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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Top 10 airlines flying from Detroit to Portsmouth

Discover the top 10 airlines that operate flights from Detroit to Portsmouth. 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 April 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$66Average$741FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$509Average$685FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$543Average$768FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$555Average$700FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$578Average$769FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$581Average$810FlexibilityNo cancel feeOn-time77%
DeltaCheapest$768Average$1,181FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$808Average$1,136FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$813Average$1,195FlexibilityNo cancel feeOn-time72%
Air FranceCheapest$826Average$1,116FlexibilityNo cancel feeOn-time77%

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