What are the cheapest airlines to fly from San Antonio to Delaware one-way?

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $96. However, be on the lookout for offers from Spirit Airlines and Southwest, as they are both options that can get you from San Antonio to Delaware for a low price.

How far in advance should I book a flight from San Antonio to Delaware?

To save on the cost of your flight from San Antonio to Delaware, book at least 38 days before your planned departure. Booking around this time can save you about 56% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $480 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $485.

What is the cheapest month to fly from San Antonio to Delaware?

Flights from San Antonio to Delaware lean towards being more expensive in November. Prices are generally better when you fly from San Antonio to Delaware in February, with the cheapest ticket starting at $182.

What is the cheapest time of day to fly from SAT to DE?

When flying from San Antonio to Delaware, 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 San Antonio to Delaware?

Located just 7.6 mi from the city center, San Antonio (SAT) is the airport most travelers will use when flying to Delaware from San Antonio.

Can I find deals for flights from San Antonio to Delaware that include hotel bookings?

Yes. In addition to deals on San Antonio to Delaware flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Antonio to Delaware?

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

Can I find deals for business class flights from San Antonio to Delaware?

Yes. Cheapflights offers flight deals from San Antonio to Delaware by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$96+ Flights from San Antonio to Delaware

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Cheap flight deals from San Antonio to Delaware

Most accurate provider	CheapOair 3 stars
Most trusted provider	CheapOair 3 stars
Round-trip from	$257 (Cheapflightsfares)
One-way from	$96 (Mytrip)
Popular in	November
Cheapest in	February
Average price	$444

Provider with most accurate pricing for San Antonio-Philadelphia flight deals.

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Provider most trusted by Cheapflights users for San Antonio-Philadelphia flights.

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From San Antonio to Delaware

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One-way flight from San Antonio to Delaware

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Highest demand for flights based on searches. 8% potential increase in price ($37 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Find flight deals from San Antonio to Delaware

Cheapest flights from San Antonio to Delaware
Explore the most affordable flight options available from San Antonio to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

Fri 9/1912:09 pmSAT - PHL

1 stop9h 33mSpirit Airlines

Sun 9/212:57 pmPHL - SAT

1 stop9h 33mSpirit Airlines

Deal found 4/29

$257

Fri 5/163:22 pmSAT - PHL

1 stop28h 53mFrontier

Mon 5/198:41 amPHL - SAT

1 stop11h 50mFrontier

Deal found 4/27

$260

Tue 5/136:45 amSAT - PHL

1 stop12h 40mMultiple Airlines

Fri 5/165:15 amPHL - SAT

1 stop15h 16mMultiple Airlines

Deal found 4/29

$264

Wed 7/2312:25 pmSAT - PHL

Nonstop3h 44mAmerican Airlines

Sat 7/268:54 amPHL - SAT

Nonstop3h 46mAmerican Airlines

Deal found 4/28

$341

Tue 6/246:30 amSAT - PHL

1 stop7h 29mDelta

Tue 7/16:00 amPHL - SAT

1 stop6h 55mDelta

Deal found 4/28

$348

Tue 5/272:25 pmSAT - PHL

1 stop6h 45mSouthwest

Tue 6/36:30 amPHL - SAT

2 stops8h 15mSouthwest

Deal found 4/27

$366

Sat 6/2812:13 pmSAT - PHL

2 stops11h 17mUnited Airlines

Wed 7/212:58 pmPHL - SAT

1 stop5h 44mUnited Airlines

Deal found 4/28

$433

Best flights from San Antonio to Delaware
Discover carefully curated flight deals from San Antonio to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 30, 2025.

Fri 9/1912:09 pmSAT - PHL

1 stop9h 33mSpirit Airlines

Sun 9/212:57 pmPHL - SAT

1 stop9h 33mSpirit Airlines

Deal found 4/29

$257

Fri 5/163:22 pmSAT - PHL

1 stop28h 53mFrontier

Mon 5/198:41 amPHL - SAT

1 stop11h 50mFrontier

Deal found 4/27

$260

Tue 5/136:45 amSAT - PHL

1 stop12h 40mMultiple Airlines

Fri 5/165:15 amPHL - SAT

1 stop15h 16mMultiple Airlines

Deal found 4/29

$264

Wed 7/2312:25 pmSAT - PHL

Nonstop3h 44mAmerican Airlines

Sat 7/268:54 amPHL - SAT

Nonstop3h 46mAmerican Airlines

Deal found 4/28

$341

Tue 6/242:49 pmSAT - PHL

1 stop5h 10mDelta

Sat 7/56:00 amPHL - SAT

1 stop5h 30mDelta

Deal found 4/28

$348

Tue 5/272:25 pmSAT - PHL

1 stop6h 45mSouthwest

Tue 6/36:30 amPHL - SAT

2 stops8h 15mSouthwest

Deal found 4/27

$366

Sat 6/2812:13 pmSAT - PHL

2 stops11h 17mUnited Airlines

Wed 7/212:58 pmPHL - SAT

1 stop5h 44mUnited Airlines

Deal found 4/28

$433

Sun 6/157:37 pmSAT - PHL

1 stop32h 48mAlaska Airlines

Wed 6/256:45 amPHL - SAT

1 stop23h 55mAlaska Airlines

Deal found 4/28

$833

Last-minute flights from San Antonio to Delaware
Discover last-minute flight deals from San Antonio to Delaware. Data last updated April 30, 2025 and is based on user searches.

Sun 5/47:15 amSAT - PHL

1 stop5h 50mUnited Airlines

Mon 5/56:30 amPHL - SAT

2 stops10h 16mUnited Airlines

Deal found 4/29

$580

Mon 5/510:09 amSAT - PHL

2 stops23h 49mSpirit Airlines

Mon 6/97:45 amPHL - SAT

1 stop30h 57mSpirit Airlines

Deal found 4/29

$298

Mon 5/511:46 amSAT - PHL

1 stop5h 08mAmerican Airlines

Mon 6/98:53 amPHL - SAT

Nonstop3h 46mAmerican Airlines

Deal found 4/29

$485

Wed 5/72:37 pmSAT - PHL

1 stop14h 24mMultiple Airlines

Thu 5/810:59 pmPHL - SAT

1 stop21h 32mMultiple Airlines

Deal found 4/28

$325

Thu 5/82:29 pmSAT - PHL

2 stops14h 15mAlaska Airlines

Fri 5/97:04 amPHL - SAT

2 stops16h 58mAlaska Airlines

Deal found 4/28

$1,692

Fri 5/93:22 pmSAT - PHL

1 stop28h 53mFrontier

Sun 5/116:54 pmPHL - SAT

1 stop18h 49mFrontier

Deal found 4/28

$290

Tue 5/136:45 amSAT - PHL

1 stop12h 40mMultiple Airlines

Fri 5/165:15 amPHL - SAT

1 stop15h 16mMultiple Airlines

Deal found 4/29

$264

Wed 5/147:05 amSAT - PHL

1 stop25h 48mSpirit Airlines

Sun 5/187:12 pmPHL - SAT

1 stop14h 44mSpirit Airlines

Deal found 4/29

$262

Fri 5/163:22 pmSAT - PHL

1 stop28h 53mFrontier

Mon 5/198:41 amPHL - SAT

1 stop11h 50mFrontier

Deal found 4/27

$260

Fri 5/236:00 pmSAT - PHL

2 stops22h 54mAlaska Airlines

Mon 5/267:00 amPHL - SAT

2 stops16h 20mAlaska Airlines

Deal found 4/28

$1,318

Tue 5/272:25 pmSAT - PHL

1 stop6h 45mSouthwest

Tue 6/36:30 amPHL - SAT

2 stops8h 15mSouthwest

Deal found 4/27

$366

Wed 5/286:45 amSAT - PHL

2 stops11h 00mUnited Airlines

Wed 6/412:58 pmPHL - SAT

1 stop5h 44mUnited Airlines

Deal found 4/28

$446

One-way flights from San Antonio to Delaware
Search for one-way flight options from San Antonio to Delaware. Find affordable one-way fares based on user searches. Data last updated April 30, 2025.

Mon 5/51:43 pmSAT - PHL

1 stop16h 09mFrontier

Deal found 4/28

$96

Thu 5/222:55 pmSAT - PHL

1 stop6h 41mSpirit Airlines

Deal found 4/28

$112

Mon 8/258:05 amSAT - PHL

2 stops8h 15mSouthwest

Deal found 4/28

$211

Tue 7/15:30 amSAT - PHL

2 stops7h 38mUnited Airlines

Deal found 4/27

$213

Fri 6/612:19 pmSAT - PHL

Nonstop3h 40mAmerican Airlines

Deal found 4/28

$238

Sat 5/105:20 amSAT - PHL

1 stop7h 32mDelta

Deal found 4/28

$248

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Antonio to Delaware that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Fri 9/19

12:09 pm-10:42 pm

1 stop9h 33m

Philadelphia

Sun 9/21

2:57 pm-11:30 pm

1 stop9h 33m

$257

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Fri 5/16

3:22 pm-9:15 pm

1 stop28h 53m

Philadelphia

Mon 5/19

8:41 am-7:31 pm

1 stop11h 50m

$260

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Tue 5/13

6:45 am-8:25 pm

1 stop12h 40m

Philadelphia

Fri 5/16

5:15 am-7:31 pm

1 stop15h 16m

$264

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Wed 7/23

12:25 pm-5:09 pm

Nonstop3h 44m

Philadelphia

Sat 7/26

8:54 am-11:40 am

Nonstop3h 46m

$341

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Tue 6/24

2:49 pm-8:59 pm

1 stop5h 10m

Philadelphia

Sat 7/5

6:00 am-10:30 am

1 stop5h 30m

$348

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Tue 5/27

2:25 pm-10:10 pm

1 stop6h 45m

Philadelphia

Tue 6/3

6:30 am-1:45 pm

2 stops8h 15m

$366

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Sat 6/28

12:13 pm-12:30 am

2 stops11h 17m

Philadelphia

Wed 7/2

12:58 pm-5:42 pm

1 stop5h 44m

$433

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Sun 6/15

7:37 pm-5:25 am

1 stop32h 48m

Philadelphia

Wed 6/25

6:52 pm-5:40 am

1 stop11h 48m

$833

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Mon 5/5

1:43 pm-6:52 am

1 stop16h 09m

$96

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 5/22

2:55 pm-10:36 pm

1 stop6h 41m

$112

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 14 results

Best time to book a flight from San Antonio to Delaware

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

Rainfall in Delaware by month

In terms of precipitation, rainfall in Delaware ranges from 2.9 - 4.3 inches per month. July is typically the wettest month, when rainfall can reach 4.3 in. February is typically the driest time to visit Delaware when rainfall is around 2.9 in.

Temperature in Delaware by month

If weather is an important factor for your trip to Delaware, 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 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing Delaware

Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from San Antonio to Delaware. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

9,961 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Southwest

8.0

Very good

4,295 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,929 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,696 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What airport do you fly from for flights from San Antonio to Delaware?
Located just 7.6 mi from the city center, San Antonio (SAT) is the airport most travelers will use when flying to Delaware from San Antonio.
What are the cheapest airlines to fly from San Antonio to Delaware one-way?
The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $96. However, be on the lookout for offers from Spirit Airlines and Southwest, as they are both options that can get you from San Antonio to Delaware for a low price.
Can I find deals for flights from San Antonio to Delaware that include hotel bookings?
Yes. In addition to deals on San Antonio to Delaware flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Antonio to Delaware?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Delaware.
Can I find deals for business class flights from San Antonio to Delaware?
Yes. Cheapflights offers flight deals from San Antonio to Delaware 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

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$96+ Cheap flights from San Antonio (SAT) to Delaware

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Antonio to Delaware with Cheapflights

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Cheap flight deals from San Antonio to Delaware

Keep the following information in mind while searching for San Antonio to Delaware flight deals. Data was last updated April 30, 2025.

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Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from San Antonio to Delaware

Cheapest flights from San Antonio to DelawareExplore the most affordable flight options available from San Antonio to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

Explore the most affordable flight options available from San Antonio to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Antonio to Delaware that are best for you.

Best time to book a flight from San Antonio to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from San Antonio with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from San Antonio to Delaware

Rainfall in Delaware by month

Plan your trip to Delaware by taking into account the average rainfall totals by month.

Temperature in Delaware by month

Plan your trip to Delaware by taking into account the average temperature totals by month.

Reviews of airlines servicing Delaware

Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from San Antonio to Delaware. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Delaware. 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 San Antonio to Delaware?

What are the cheapest airlines to fly from San Antonio to Delaware one-way?

Can I find deals for flights from San Antonio to Delaware that include hotel bookings?

How can I find direct flights from San Antonio to Delaware?

Can I find deals for business class flights from San Antonio to Delaware?

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 San Antonio to Delaware

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

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Cheapest flights from San Antonio to Delaware
Explore the most affordable flight options available from San Antonio to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.