HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Prague

$249+ Cheap flights from Washington, D.C. (WAS) to Prague (PRG)

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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — PRG
dic. 24 — dic. 311
mié. 12/24
mié. 12/31
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Prague with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. to Václav Havel Prague are usually found in September or March, booked 66 days in advance, depart on a Tuesday or Thursday and return on a Sunday

Find flight deals from Washington, D.C. to Prague

Cheapest flights from Washington, D.C. to Prague
Explore the most affordable flight options available from Washington, D.C. to Prague. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 24, 2025.

This Gotogate deal was found by Cheapflights users on 11/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/77:40 pmBWI - PRG
1 stop10h 15mIcelandair
lun. 12/2212:50 pmPRG - BWI
1 stop11h 50mIcelandair
Deal found 11/22$467
This oojo deal was found by Cheapflights users on 11/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/25:30 pmIAD - PRG
1 stop12h 10mTAP AIR PORTUGAL
mié. 12/1012:30 pmPRG - IAD
1 stop32h 45mTAP AIR PORTUGAL
Deal found 11/22$551
This oojo deal was found by Cheapflights users on 11/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/25:30 pmIAD - PRG
1 stop12h 10mTAP AIR PORTUGAL
lun. 2/2312:30 pmPRG - IAD
1 stop32h 05mTAP AIR PORTUGAL
Deal found 11/23$565
This CrystalTravel deal was found by Cheapflights users on 11/23. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/88:30 pmIAD - PRG
1 stop16h 10mScandinavian Airlines
jue. 12/1110:25 amPRG - IAD
1 stop12h 50mScandinavian Airlines
Deal found 11/23$614
This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/22. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/95:30 pmIAD - PRG
1 stop12h 10mTAP AIR PORTUGAL
mié. 1/1412:30 pmPRG - IAD
1 stop14h 30mTAP AIR PORTUGAL
Deal found 11/22$641
This Mytrip deal was found by Cheapflights users on 11/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/87:40 pmIAD - PRG
3 stops17h 00mMultiple Airlines
sáb. 12/136:00 amPRG - IAD
2 stops18h 30mMultiple Airlines
Deal found 11/23$642
This KAYAK deal was found by Cheapflights users on 11/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/95:30 pmIAD - PRG
1 stop12h 10mTAP AIR PORTUGAL
lun. 12/1512:30 pmPRG - IAD
1 stop32h 05mTAP AIR PORTUGAL
Deal found 11/22$663
This Scandinavian Airlines deal was found by Cheapflights users on 11/22. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/211:13 amDCA - PRG
2 stops21h 07mScandinavian Airlines
mié. 12/1010:25 amPRG - DCA
2 stops18h 32mScandinavian Airlines
Deal found 11/22$667
This Orbitz deal was found by Cheapflights users on 11/23. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/81:15 pmDCA - PRG
2 stops14h 30mScandinavian Airlines
jue. 12/1110:25 amPRG - DCA
2 stops18h 32mScandinavian Airlines
Deal found 11/23$672
This Expedia deal was found by Cheapflights users on 11/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/3110:55 pmIAD - PRG
1 stop11h 10mMultiple Airlines
mié. 1/78:15 pmPRG - IAD
2 stops49h 20mMultiple Airlines
Deal found 11/23$673
This KAYAK deal was found by Cheapflights users on 11/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/912:19 pmIAD - PRG
2 stops15h 26mScandinavian Airlines
vie. 12/129:05 pmPRG - IAD
2 stops28h 14mScandinavian Airlines
Deal found 11/22$679
This Mytrip deal was found by Cheapflights users on 11/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/27:40 pmBWI - PRG
2 stops15h 05mMultiple Airlines
mié. 12/106:00 amPRG - BWI
2 stops18h 40mMultiple Airlines
Deal found 11/22$697

Cheap flight deals from Washington, D.C. to Prague

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Prague (PRG). 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 noviembre 24, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$467
(Gotogate)

One-way from

$262
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$663
Provider with most accurate pricing for Washington, D.C. (WAS)-Václav Havel Prague flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Václav Havel Prague flights.
Search Deals
From Washington, D.C. (WAS) to Václav Havel Prague
Search Deals
One-way flight from Washington, D.C. (WAS) to Václav Havel Prague
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($154 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Prague 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 noviembre 24, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Prague that are best for you.

Fly from

Washington, D.C.

Fly to

Prague

Route

Depart

Return

Price

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

mar. 3/24

12:30 pm-2:20 pm

2 stops20h 50m

Václav Havel Prague

lun. 3/30

10:20 am-4:50 pm

1 stop12h 30m

$572

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

sáb. 1/17

8:30 pm-8:10 pm

1 stop17h 40m

Václav Havel Prague

vie. 1/30

10:25 am-7:09 pm

2 stops14h 44m

$578

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

lun. 5/4

12:30 pm-8:15 pm

2 stops25h 45m

Václav Havel Prague

mié. 5/20

8:20 pm-4:50 pm

2 stops26h 30m

$579

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

mar. 3/31

1:00 pm-10:55 am

2 stops15h 55m

Václav Havel Prague

mié. 4/8

8:50 am-3:35 pm

1 stop12h 45m

$595

BaltimorePrague

BWI - PRG

BWIPRG

Baltimore/Washington

mar. 1/13

10:05 am-10:50 am

3 stops18h 45m

Václav Havel Prague

mar. 1/27

7:25 am-9:21 pm

2 stops19h 56m

$610

Washington, D.C.Prague

DCA - PRG

DCAPRG

Washington, D.C. Reagan-National

lun. 1/12

4:10 pm-10:50 am

2 stops12h 40m

Václav Havel Prague

lun. 1/26

11:50 am-3:33 pm

2 stops33h 43m

$611

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

mié. 4/1

7:15 pm-3:45 pm

1 stop14h 30m

Václav Havel Prague

lun. 4/6

8:55 pm-3:50 pm

1 stop24h 55m

$614

Washington, D.C.Prague

DCA - PRG

DCAPRG

Washington, D.C. Reagan-National

jue. 2/12

11:10 am-9:45 am

2 stops16h 35m

Václav Havel Prague

lun. 2/16

10:25 am-10:43 pm

2 stops18h 18m

$652

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

sáb. 3/28

7:00 pm-3:05 pm

1 stop15h 05m

Václav Havel Prague

mar. 4/7

7:30 am-1:55 pm

2 stops36h 25m

$665

Washington, D.C.Prague

IAD - PRG

IADPRG

Washington, D.C. Dulles Intl

lun. 5/4

5:40 pm-6:45 pm

2 stops19h 05m

Václav Havel Prague

lun. 5/25

8:55 pm-3:50 pm

1 stop24h 55m

$684

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

Showing 1-10 of 58 results
1
2
3
...
6

Compare providers for flights from Washington, D.C. to Prague

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Prague in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C.-Prague flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Prague flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Prague flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Prague flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Prague flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Washington, D.C. to Prague

Have a flexible travel schedule? Discover the best time to fly to Prague from Washington, D.C. 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 Washington, D.C. to Prague

How far ahead should I book a flight from Washington, D.C. to Prague?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Prague. Price data was last updated on November 21, 2025.

The best time to book flights from Washington, D.C. to Prague is 66 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. to Prague?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to Prague (average of $367). Flying from Washington, D.C. to Prague in June is currently the most expensive (average of $608). 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 WAS to PRG?

Find hourly flight availability from Washington, D.C. to Prague. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 24, 2025.

It’s typically best to fly out from Washington, D.C. to Prague in the evening. Doing so could potentially save you 19% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost to fly round-trip from Washington, D.C. to Prague?

Reviews of airlines servicing Prague

Get insights into the airlines that provide service to Prague. 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 Prague. Reviews last updated noviembre 24, 2025.
See what other customers who have flown with Scandinavian Airlines, United Airlines, and Aer Lingus from Washington, D.C. to Prague have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.4
Good
1,585 reviews

Overall

7.4

Crew

8.0

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Food

6.7

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Scandinavian Airlines
7.4
Good
1,585 reviews
Scandinavian Airlines
7.4
Good
1,585 reviews

Overall

7.4

Crew

8.0

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Food

6.7

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
United Airlines
7.4
Good
9,036 reviews
Scandinavian Airlines
7.4
Good
1,585 reviews

Overall

7.4

Crew

8.0

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Food

6.7

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Aer Lingus
7.2
Good
1,379 reviews
Scandinavian Airlines
7.4
Good
1,585 reviews

Overall

7.4

Crew

8.0

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Food

6.7

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Icelandair
7.0
Good
581 reviews
Scandinavian Airlines
7.4
Good
1,585 reviews

Overall

7.4

Crew

8.0

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Food

6.7

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Lufthansa
6.8
Okay
7,583 reviews
Scandinavian Airlines
7.4
Good
1,585 reviews

Overall

7.4

Crew

8.0

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Food

6.7

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Prague. 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 Prague from Washington, D.C.?

    Václav Havel Prague (PRG), located 6.9 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to Prague. 11 airlines have flights to Václav Havel Prague from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Václav Havel Prague should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. per day.

  • How long is the flight from Washington, D.C. to Prague?

    A quick flight from Washington, D.C. to Prague can take about 15h 55m. Scandinavian Airlines provides one of the quickest options available for as low as $595. The distance between Washington, D.C. and Prague is about 4290 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Washington, D.C. to Prague round-trip?

    Our cheapest airline available from Washington, D.C. to Prague is Icelandair. Our recent data shows that you can find tickets from as low as $416 on this airline. Additional options worth looking into are Scandinavian Airlines and TAP AIR PORTUGAL, starting at $427 and $479 round-trip. Icelandair is 42% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. to Prague one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. to Prague are Scandinavian Airlines ($262), Aer Lingus ($352), and American Airlines ($481).

  • What are the most popular routes from Washington, D.C. to Prague?

    While some choose either Washington, D.C. Reagan-National - Václav Havel Prague or Baltimore/Washington - Václav Havel Prague, Washington, D.C. Dulles Intl - Václav Havel Prague is the most popular route from Washington, D.C. to Prague.

  • Can I find deals for flights from Washington, D.C. to Prague that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Prague flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Prague?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Prague.

  • Can I find deals for business class flights from Washington, D.C. to Prague?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Prague 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 Washington, D.C. to Prague?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to Prague (average of $367). Flying from Washington, D.C. to Prague in June is currently the most expensive (average of $608). 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

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 Washington, D.C. to Prague

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Prague flights
Reagan-National to Prague flights

Top 10 airlines flying from Washington, D.C. to Prague

Discover the top 10 airlines that operate flights from Washington, D.C. to Prague. 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 noviembre 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$381Average$604FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$427Average$484FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$479Average$797FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$486Average$712FlexibilityNo cancel feeOn-time79%
DeltaCheapest$525Average$782FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$547Average$729FlexibilityNo cancel feeOn-time70%
Turkish AirlinesCheapest$561Average$597FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$563Average$870FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$563Average$823FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$578Average$903FlexibilityNo cancel feeOn-timeN/A

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.