Find flights
Deals

£54+ Cheap flights from Delaware

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ILG — LHR
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Find flights from Delaware

Enter your travel dates to find the best prices.

Cheapest flights from Delaware
Explore the most affordable flight options available from Delaware. Find the lowest fares based on data from user searches, with prices last updated on 21 November 2025.

Thu 19/218:20PHL - SFO
Nonstop6h 30mUnited Airlines
Tue 24/210:50SFO - PHL
Nonstop5h 21mUnited Airlines
Deal found 19/11£221
Fri 9/116:10PHL - SFO
Nonstop6h 25mAmerican Airlines
Tue 13/123:13SFO - PHL
Nonstop5h 16mAmerican Airlines
Deal found 19/11£222
Sat 10/108:35PHL - SFO
Nonstop6h 28mUnited Airlines
Sun 11/100:43SFO - PHL
1 stop7h 52mUnited Airlines
Deal found 19/11£229
Sat 13/1215:35PHL - SFO
1 stop8h 39mUnited Airlines
Sat 13/1200:43SFO - PHL
1 stop7h 54mUnited Airlines
Deal found 19/11£232
Sat 6/1207:06PHL - SFO
1 stop11h 40mAlaska Airlines
Wed 10/1209:00SFO - PHL
1 stop17h 46mAlaska Airlines
Deal found 19/11£236
Sun 15/206:00PHL - SFO
1 stop7h 59mDelta
Wed 25/206:00SFO - PHL
1 stop7h 38mDelta
Deal found 19/11£236
Sun 21/1208:15PHL - SFO
Nonstop6h 28mUnited Airlines
Sat 27/1222:40SFO - PHL
Nonstop5h 24mUnited Airlines
Deal found 20/11£237
Sat 13/1209:45PHL - SFO
1 stop7h 38mDelta
Sat 10/118:30SFO - PHL
2 stops11h 20mDelta
Deal found 19/11£238
Sat 10/112:11PHL - SFO
2 stops14h 17mDelta
Mon 12/118:30SFO - PHL
2 stops11h 20mDelta
Deal found 19/11£240
Sat 2/515:15PHL - SFO
1 stop12h 39mJetBlue
Thu 14/521:30SFO - PHL
1 stop8h 43mJetBlue
Deal found 20/11£243
Tue 6/106:40PHL - SFO
2 stops10h 40mSouthwest
Tue 13/106:05SFO - PHL
2 stops11h 15mSouthwest
Deal found 20/11£244
Mon 22/1208:15PHL - SFO
Nonstop6h 28mUnited Airlines
Mon 29/1218:28SFO - PHL
1 stop8h 04mUnited Airlines
Deal found 19/11£245

Find flights from Delaware within your budget

 
Find flights departing from Delaware that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 21 November 2025. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 12/2

18:20-21:50

Nonstop6h 30m

San Francisco

Sat 21/2

23:05-07:15

Nonstop5h 10m

£221

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 15/4

06:10-09:28

Nonstop6h 18m

San Francisco

Sat 18/4

23:05-07:45

Nonstop5h 40m

£221

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Mon 16/2

08:35-12:06

Nonstop6h 31m

San Francisco

Mon 23/2

23:05-07:15

Nonstop5h 10m

£221

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sun 18/1

10:30-15:35

1 stop8h 05m

San Francisco

Sat 24/1

13:25-21:52

Nonstop5h 27m

£229

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 13/12

06:15-09:40

Nonstop6h 25m

San Francisco

Tue 16/12

11:05-23:22

1 stop9h 17m

£229

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 16/1

13:10-19:09

1 stop8h 59m

San Francisco

Mon 19/1

13:25-21:52

Nonstop5h 27m

£229

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 11/12

06:30-11:49

1 stop8h 19m

San Francisco

Mon 15/12

11:15-19:41

Nonstop5h 26m

£229

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 9/1

06:15-11:36

1 stop8h 21m

San Francisco

Mon 12/1

00:40-10:31

1 stop6h 51m

£236

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 25/4

15:15-22:49

1 stop10h 34m

San Francisco

Fri 1/5

00:40-10:33

1 stop6h 53m

£236

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Tue 6/1

06:15-13:47

1 stop10h 32m

San Francisco

Tue 20/1

11:40-00:21

1 stop9h 41m

£236

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Delaware

Have a flexible travel schedule? Discover the best time to fly from Delaware 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 Delaware

Get recent, data-driven insights about flights from Delaware including ideal travel times, pricing trends, and more.
No data available for this route at this time. Please check back soon.

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.

Direct flights from USA

Book a direct flight from one of these other cities located in USA.
Direct flights from Philadelphia

Related info for your journey

Access useful and relevant information related to your journey from Delaware. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 21 November 2025.

  • Where are the cheapest places to fly to from Delaware?

    Check out the cheapest flights from Delaware to embark to:
    Travel from Philadelphia to London from £353 round trip
    Travel from Philadelphia to Edinburgh from £487 round trip

  • How does Cheapflights help users find flights from Delaware?

    When you search for this flight from Delaware, 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 best flight for you.

  • Why should you use Cheapflights to find cheap flight tickets from Delaware?

    Millions of users choose and trust Cheapflights to book the best flight deals from Delaware 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 Delaware with no change fees?

    Users can book flights with no change fees policies with our dedicated filters. Book flights from Delaware flexibly with Cheapflights today.

  • Can Cheapflights notify me if prices for flights from Delaware become cheaper?

    Not ready to book yet? You can track prices for flights from Delaware on Cheapflights with our Price Alerts feature and get notified when better prices are available.

See more FAQs

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 Delaware?

When you search for this flight from Delaware, 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 best flight for you.

Why should you use Cheapflights to find cheap flight tickets from Delaware?

Millions of users choose and trust Cheapflights to book the best flight deals from Delaware 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 Delaware with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Delaware flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Delaware become cheaper?

Not ready to book yet? You can track prices for flights from Delaware on Cheapflights with our Price Alerts feature and get notified when better prices are available.

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.