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Cheap flights from Washington, D.C. Dulles Intl Airport to San Juan from $126

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to San Juan departing on 9/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to San Juan

Cheap round-trip flights

Frontier Logo
7:14 pm - 9:30 amIAD-PSE
14h 16m1 stop
Frontier Logo
10:15 am - 6:24 pmPSE-IAD
8h 09m1 stop
$252Frontier
Find Deal
Thu, Oct 2 - Mon, Oct 6
Frontier Logo
8:30 am - 9:55 amIAD-PSE
24h 25m1 stop
Frontier Logo
10:50 am - 7:35 amPSE-IAD
21h 45m1 stop
$284Frontier
Find Deal
Fri, Dec 5 - Sun, Dec 7
Frontier Logo
5:34 pm - 11:20 amIAD-PSE
16h 46m2 stops
Frontier Logo
12:15 pm - 7:52 pmPSE-IAD
8h 37m1 stop
$290Frontier
Find Deal
Fri, Nov 14 - Mon, Nov 17
Frontier Logo
7:14 pm - 9:30 amIAD-PSE
14h 16m1 stop
Frontier Logo
10:15 am - 6:14 pmPSE-IAD
7h 59m1 stop
$308Frontier
Find Deal
Thu, Oct 2 - Sun, Oct 5
Frontier Logo
7:14 pm - 9:30 amIAD-PSE
14h 16m1 stop
Frontier Logo
10:44 am - 8:43 pmPSE-IAD
9h 59m1 stop
$348Frontier
Find Deal
Thu, Oct 2 - Mon, Oct 20
Frontier Logo
8:30 am - 9:55 amIAD-PSE
24h 25m1 stop
Frontier Logo
12:50 pm - 7:35 amPSE-IAD
19h 45m1 stop
$364Frontier
Find Deal
Sat, Dec 13 - Thu, Dec 18
Frontier Logo
8:02 pm - 9:18 amIAD-PSE
13h 16m1 stop
Frontier Logo
11:54 am - 8:33 pmPSE-IAD
8h 39m1 stop
$378Frontier
Find Deal
Thu, Oct 9 - Mon, Oct 13
Frontier Logo
8:02 pm - 9:18 amIAD-PSE
13h 16m1 stop
Frontier Logo
10:44 am - 8:43 pmPSE-IAD
9h 59m1 stop
$394Frontier
Find Deal
Thu, Oct 16 - Mon, Oct 20
Multiple Airlines Logo
9:50 pm - 9:18 amIAD-PSE
35h 28m2 stops
Multiple Airlines Logo
10:44 am - 8:43 pmPSE-IAD
9h 59m1 stop
$751Multiple Airlines
Find Deal
Wed, Oct 15 - Mon, Oct 20
Multiple Airlines Logo
2:21 pm - 9:55 amIAD-PSE
42h 34m2 stops
Multiple Airlines Logo
12:50 pm - 7:35 amPSE-IAD
19h 45m1 stop
$1,025Multiple Airlines
Find Deal
Sun, Dec 21 - Thu, Jan 1

Frontier flights from Washington, D.C. Dulles Intl Airport to Ponce

Our best Frontier deals on Washington, D.C. Dulles Intl Airport to Ponce flight tickets
Frontier
Oct 2
IAD7:14 pmWashington, D.C. Dulles Intl
14h 16m
1 stop
PSE9:30 amPonce Mercedita
Oct 6
PSE10:15 amPonce Mercedita
8h 09m
1 stop
IAD6:24 pmWashington, D.C. Dulles Intl
$252
Find similar
Frontier
Sep 25
IAD7:14 pmWashington, D.C. Dulles Intl
14h 16m
1 stop
PSE9:30 amPonce Mercedita
Sep 28
PSE10:15 amPonce Mercedita
7h 59m
1 stop
IAD6:14 pmWashington, D.C. Dulles Intl
$268
Find similar
Frontier
Dec 5
IAD8:30 amWashington, D.C. Dulles Intl
24h 25m
1 stop
PSE9:55 amPonce Mercedita
Dec 7
PSE10:50 amPonce Mercedita
21h 45m
1 stop
IAD7:35 amWashington, D.C. Dulles Intl
$284
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Ponce 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, momondo users made 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Ponce that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Thu 10/2

7:14 pm-9:30 am

1 stop14h 16m

Ponce Mercedita

Mon 10/6

10:15 am-6:24 pm

1 stop8h 09m

$252

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Fri 12/5

8:30 am-9:55 am

1 stop24h 25m

Ponce Mercedita

Sun 12/7

10:50 am-7:35 am

1 stop21h 45m

$284

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Fri 11/14

5:34 pm-11:20 am

2 stops16h 46m

Ponce Mercedita

Mon 11/17

12:15 pm-7:52 pm

1 stop8h 37m

$290

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Thu 10/2

7:14 pm-9:30 am

1 stop14h 16m

Ponce Mercedita

Sun 10/5

10:15 am-6:14 pm

1 stop7h 59m

$308

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Thu 10/2

7:14 pm-9:30 am

1 stop14h 16m

Ponce Mercedita

Mon 10/20

10:44 am-8:43 pm

1 stop9h 59m

$348

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Sat 12/13

8:30 am-9:55 am

1 stop24h 25m

Ponce Mercedita

Thu 12/18

12:50 pm-7:35 am

1 stop19h 45m

$364

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Thu 10/9

8:02 pm-9:18 am

1 stop13h 16m

Ponce Mercedita

Mon 10/13

11:54 am-8:33 pm

1 stop8h 39m

$378

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Thu 10/16

8:02 pm-9:18 am

1 stop13h 16m

Ponce Mercedita

Mon 10/20

10:44 am-8:43 pm

1 stop9h 59m

$394

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Wed 10/15

9:50 pm-9:18 am

2 stops35h 28m

Ponce Mercedita

Mon 10/20

10:44 am-8:43 pm

1 stop9h 59m

$751

Washington, D.C.Ponce

IAD - PSE

IADPSE

Washington, D.C. Dulles Intl

Sun 12/21

2:21 pm-9:55 am

2 stops42h 34m

Ponce Mercedita

Thu 1/1

12:50 pm-7:35 am

1 stop19h 45m

$1,025

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Ponce

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Ponce?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Ponce is on a Tuesday. Travelers who choose to depart for Ponce on a Tuesday will often find tickets for as low as $283. On the other hand, Friday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $459.

What is the cheapest time of day to depart on your flight to Ponce?

In the evening is the cheapest time of day to fly from Washington, D.C. Dulles Intl Airport to Ponce when you can find flight prices for as low as $241. Flying to Ponce in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ponce is in the morning when prices are around $406.

When to book flights from Washington, D.C. Dulles Intl Airport to Ponce

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Ponce according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Ponce (IAD to PSE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Ponce

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Ponce. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Ponce.
Search flight deals

  • How far is Washington, D.C. Dulles Intl to Ponce Mercedita by plane?

    The distance between Washington, D.C. Dulles Intl and Ponce Mercedita is about 1585.2 mi. 10h 27m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Ponce Mercedita Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Ponce Mercedita Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Ponce Mercedita Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to Ponce Mercedita Airport.

  • What documentation or ID do you need to fly to Ponce Mercedita Airport?

    The travel and health documents required for your trip to Ponce Mercedita Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ponce Mercedita Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Ponce?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Ponce. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Ponce with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Ponce on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Ponce?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ponce from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Ponce right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Ponce, momondo offers a useful price alert feature which will track prices for flights to Ponce from Washington, D.C. and alert you when they change.

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