---
title: "Washington to Ostende cheap flights (WAS to OST) - Expedia"
description: "Cheap Flights from Washington (WAS) to Ostende (OST) start at for one-way and for round trip. Earn your airline miles on top of our rewards!"
canonical: "https://www.expedia.com/lp/flights/was/ost/washington-to-ostende"
language: en-US
market: US
currency: USD
prices_as_of: 2026-11-14T01:59:01Z
---

# Cheap Flights from Washington (WAS) to Ostende (OST)
![A large red-brick building with a symmetrical facade, multiple windows, and a central entrance.](https://images.trvl-media.com/place/181444/19627d1f-5e6b-440c-b1fd-b0b263b4b2ec.jpg?impolicy=fcrop&w=1200&h=500&q=medium)

## Popular airlines from Washington to Ostende (OST-Ostend-Bruges Intl.)

[American Airlines](https://www.expedia.com/Flights-Search?leg1=from:WAS,to:OST,departure:11/28/2026TANYT&leg2=from:OST,to:WAS,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}])

[United](https://www.expedia.com/Flights-Search?leg1=from:WAS,to:OST,departure:11/28/2026TANYT&leg2=from:OST,to:WAS,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}])

[Southwest Airlines](https://www.expedia.com/Flights-Search?leg1=from:WAS,to:OST,departure:11/28/2026TANYT&leg2=from:OST,to:WAS,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}])

[Delta](https://www.expedia.com/Flights-Search?leg1=from:WAS,to:OST,departure:11/28/2026TANYT&leg2=from:OST,to:WAS,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}])

[Frontier Airlines](https://www.expedia.com/Flights-Search?leg1=from:WAS,to:OST,departure:11/28/2026TANYT&leg2=from:OST,to:WAS,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}])

[JetBlue Airways](https://www.expedia.com/Flights-Search?leg1=from:WAS,to:OST,departure:11/28/2026TANYT&leg2=from:OST,to:WAS,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}])

[Alaska Airlines](https://www.expedia.com/Flights-Search?leg1=from:WAS,to:OST,departure:11/28/2026TANYT&leg2=from:OST,to:WAS,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}])

## Book with confidence

### Washington to Ostende Flights

#### The cheapest times to fly from Washington to Ostende

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Ostende are during the month of . You can find some of the cheapest flights from Washington to Ostende with Expedia's search tool and vast selection of airlines.

#### The best time to book a flight from Washington to Ostende

Sunday is one of the best days to book for cheap flights from Washington to Ostende: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

#### How to find cheap round-trip tickets from Washington to Ostende

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Ostende in 2026\. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Ostende flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Washington to Ostende airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*\*Terms apply.*

*Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages.*

## Travel information

| Origin airport      | Washington Dulles Intl. Airport |
| ------------------- | ------------------------------- |
| Destination airport | Ostende                         |
| Distance            | 3,807 miles away                |

## Explore a world of travel with Expedia

- [Flights](?equalTargetTab=tab-0)
- [Flights from Florence (FLR) to Ostende (OST)](https://www.expedia.com/lp/flights/flr/ost/florence-to-ostende)
- [Flights from Cambridge (CBG) to Ostende (OST)](https://www.expedia.com/lp/flights/cbg/ost/cambridge-to-ostende)
- [Flights from Brisbane (BNE) to Ostende (OST)](https://www.expedia.com/lp/flights/bne/ost/brisbane-to-ostende)
- [Flights from Düsseldorf (DUS) to Ostende (OST)](https://www.expedia.com/lp/flights/dus/ost/dusseldorf-to-ostende)
- [Flights from Catania (CTA) to Ostende (OST)](https://www.expedia.com/lp/flights/cta/ost/catania-to-ostende)
- [Flights from Bucharest (OTP) to Ostende (OST)](https://www.expedia.com/lp/flights/otp/ost/bucharest-to-ostende)
- [Flights from Pittsburgh (PIT) to Ostende (OST)](https://www.expedia.com/lp/flights/pit/ost/pittsburgh-to-ostende)
- [Flights from Larnaca (LCA) to Ostende (OST)](https://www.expedia.com/lp/flights/lca/ost/larnaca-to-ostende)
- [Flights from Riga (RIX) to Ostende (OST)](https://www.expedia.com/lp/flights/rix/ost/riga-to-ostende)
- [Flights from Detroit (DTW) to Ostende (OST)](https://www.expedia.com/lp/flights/dtw/ost/detroit-to-ostende)
- [Flights from Cairo (CAI) to Ostende (OST)](https://www.expedia.com/lp/flights/cai/ost/cairo-to-ostende)
- [Flights from Los Angeles (LAX) to Ostende (OST)](https://www.expedia.com/lp/flights/lax/ost/los-angeles-to-ostende)
- [Flights from Paris (CDG) to Ostende (OST)](https://www.expedia.com/lp/flights/cdg/ost/paris-to-ostende)
- [Flights from Bern (BRN) to Ostende (OST)](https://www.expedia.com/lp/flights/brn/ost/bern-to-ostende)
- [Flights from New York (JFK) to Ostende (OST)](https://www.expedia.com/lp/flights/jfk/ost/new-york-to-ostende)
- [Flights from Manchester (MAN) to Ostende (OST)](https://www.expedia.com/lp/flights/man/ost/manchester-to-ostende)
- [Flights from Glasgow (GLA) to Ostende (OST)](https://www.expedia.com/lp/flights/gla/ost/glasgow-to-ostende)
- [Flights from Strasbourg (SXB) to Ostende (OST)](https://www.expedia.com/lp/flights/sxb/ost/strasbourg-to-ostende)
- [Flights from Leipzig (LEJ) to Ostende (OST)](https://www.expedia.com/lp/flights/lej/ost/leipzig-to-ostende)
- [Flights from Hamburg (HAM) to Ostende (OST)](https://www.expedia.com/lp/flights/ham/ost/hamburg-to-ostende)
- [Flights from Málaga (AGP) to Ostende (OST)](https://www.expedia.com/lp/flights/agp/ost/malaga-to-ostende)
- [Flights from Brussels (BRU) to Ostende (OST)](https://www.expedia.com/lp/flights/bru/ost/brussels-to-ostende)
- [Flights from Lyon (LYS) to Ostende (OST)](https://www.expedia.com/lp/flights/lys/ost/lyon-to-ostende)
- [Flights from Beirut (BEY) to Ostende (OST)](https://www.expedia.com/lp/flights/bey/ost/beirut-to-ostende)
- [Flights from Stuttgart (STR) to Ostende (OST)](https://www.expedia.com/lp/flights/str/ost/stuttgart-to-ostende)
- [Flights from Munich (MUC) to Ostende (OST)](https://www.expedia.com/lp/flights/muc/ost/munich-to-ostende)
- [Flights from Tampa (TPA) to Ostende (OST)](https://www.expedia.com/lp/flights/tpa/ost/tampa-to-ostende)
- [Flights from Warsaw (WAW) to Ostende (OST)](https://www.expedia.com/lp/flights/waw/ost/warsaw-to-ostende)
- [Flights from London (LGW) to Ostende (OST)](https://www.expedia.com/lp/flights/lgw/ost/london-to-ostende)
- [Flights from San Diego (SAN) to Ostende (OST)](https://www.expedia.com/lp/flights/san/ost/san-diego-to-ostende)
- [Flights from Valencia (VLC) to Ostende (OST)](https://www.expedia.com/lp/flights/vlc/ost/valencia-to-ostende)
- [Flights from Prague (PRG) to Ostende (OST)](https://www.expedia.com/lp/flights/prg/ost/prague-to-ostende)
- [Flights from Antalya (AYT) to Ostende (OST)](https://www.expedia.com/lp/flights/ayt/ost/antalya-to-ostende)
- [Flights from Hannover (HAJ) to Ostende (OST)](https://www.expedia.com/lp/flights/haj/ost/hannover-to-ostende)
- [Flights from Birmingham (BHX) to Ostende (OST)](https://www.expedia.com/lp/flights/bhx/ost/birmingham-to-ostende)
- [Flights from Bristol (BRS) to Ostende (OST)](https://www.expedia.com/lp/flights/brs/ost/bristol-to-ostende)
- [Flights from Malmo (MMA) to Ostende (OST)](https://www.expedia.com/lp/flights/mma/ost/malmo-to-ostende)
- [Flights from Oklahoma City (OKC) to Ostende (OST)](https://www.expedia.com/lp/flights/okc/ost/oklahoma-city-to-ostende)
- [Flights from Barcelona (BCN) to Ostende (OST)](https://www.expedia.com/lp/flights/bcn/ost/barcelona-to-ostende)
- [Flights from Lisbon (LIS) to Ostende (OST)](https://www.expedia.com/lp/flights/lis/ost/lisbon-to-ostende)
- [Flights from Las Vegas (LAS) to Ostende (OST)](https://www.expedia.com/lp/flights/las/ost/las-vegas-to-ostende)
- [Flights from London (LHR) to Ostende (OST)](https://www.expedia.com/lp/flights/lhr/ost/london-to-ostende)
- [Flights from Minneapolis (MSP) to Ostende (OST)](https://www.expedia.com/lp/flights/msp/ost/minneapolis-to-ostende)
- [Flights from Kansas City (MCI) to Ostende (OST)](https://www.expedia.com/lp/flights/mci/ost/kansas-city-to-ostende)
- [Flights from London (BQH) to Ostende (OST)](https://www.expedia.com/lp/flights/bqh/ost/london-to-ostende)
- [Flights from Port of Spain (POS) to Ostende (OST)](https://www.expedia.com/lp/flights/pos/ost/port-of-spain-to-ostende)
- [Flights from Bergamo (BGY) to Ostende (OST)](https://www.expedia.com/lp/flights/bgy/ost/bergamo-to-ostende)
- [Flights from Washington (IAD) to Ostende (OST)](https://www.expedia.com/lp/flights/iad/ost/washington-to-ostende)
- [Flights from Naples (NAP) to Ostende (OST)](https://www.expedia.com/lp/flights/nap/ost/naples-to-ostende)
- [Flights from Orlando (MCO) to Ostende (OST)](https://www.expedia.com/lp/flights/mco/ost/orlando-to-ostende)
- [Flights from Denver (DEN) to Ostende (OST)](https://www.expedia.com/lp/flights/den/ost/denver-to-ostende)
- [Flights from Pisa (PSA) to Ostende (OST)](https://www.expedia.com/lp/flights/psa/ost/pisa-to-ostende)
- [Flights from Dammam (DMM) to Ostende (OST)](https://www.expedia.com/lp/flights/dmm/ost/dammam-to-ostende)
- [Flights from Akure (AKR) to Ostende (OST)](https://www.expedia.com/lp/flights/akr/ost/akure-to-ostende)
- [Flights from Madrid (MAD) to Ostende (OST)](https://www.expedia.com/lp/flights/mad/ost/madrid-to-ostende)
- [Flights from Baltimore (BWI) to Ostende (OST)](https://www.expedia.com/lp/flights/bwi/ost/baltimore-to-ostende)
- [Flights from Bologna (BLQ) to Ostende (OST)](https://www.expedia.com/lp/flights/blq/ost/bologna-to-ostende)
- [Flights from Dubai (DXB) to Ostende (OST)](https://www.expedia.com/lp/flights/dxb/ost/dubai-to-ostende)
- [Flights from Cincinnati (CVG) to Ostende (OST)](https://www.expedia.com/lp/flights/cvg/ost/cincinnati-to-ostende)
- [Flights from Luxembourg (LUX) to Ostende (OST)](https://www.expedia.com/lp/flights/lux/ost/luxembourg-to-ostende)
- [Flights from Amsterdam (AMS) to Ostende (OST)](https://www.expedia.com/lp/flights/ams/ost/amsterdam-to-ostende)
- [Flights from Boston (BOS) to Ostende (OST)](https://www.expedia.com/lp/flights/bos/ost/boston-to-ostende)
- [Flights from Athens (ATH) to Ostende (OST)](https://www.expedia.com/lp/flights/ath/ost/athens-to-ostende)
- [Flights from Stockholm (ARN) to Ostende (OST)](https://www.expedia.com/lp/flights/arn/ost/stockholm-to-ostende)
- [Flights from Bremen (BRE) to Ostende (OST)](https://www.expedia.com/lp/flights/bre/ost/bremen-to-ostende)
- [Flights from San Francisco (SFO) to Ostende (OST)](https://www.expedia.com/lp/flights/sfo/ost/san-francisco-to-ostende)
- [Flights from Turin (TRN) to Ostende (OST)](https://www.expedia.com/lp/flights/trn/ost/turin-to-ostende)
- [Flights from Miami (MIA) to Ostende (OST)](https://www.expedia.com/lp/flights/mia/ost/miami-to-ostende)
- [Flights from Chicago (ORD) to Ostende (OST)](https://www.expedia.com/lp/flights/ord/ost/chicago-to-ostende)
- [Flights from Dallas (DFW) to Ostende (OST)](https://www.expedia.com/lp/flights/dfw/ost/dallas-to-ostende)
- [Flights from Seattle (SEA) to Ostende (OST)](https://www.expedia.com/lp/flights/sea/ost/seattle-to-ostende)
- [Flights from Belgrade (BEG) to Ostende (OST)](https://www.expedia.com/lp/flights/beg/ost/belgrade-to-ostende)
- [Flights from Dublin (DUB) to Ostende (OST)](https://www.expedia.com/lp/flights/dub/ost/dublin-to-ostende)
- [Flights from Budapest (BUD) to Ostende (OST)](https://www.expedia.com/lp/flights/bud/ost/budapest-to-ostende)
- [Flights from Istanbul (IST) to Ostende (OST)](https://www.expedia.com/lp/flights/ist/ost/istanbul-to-ostende)
- [Flights from Frankfurt (FRA) to Ostende (OST)](https://www.expedia.com/lp/flights/fra/ost/frankfurt-to-ostende)
- [Flights from Newark Liberty Intl. Airport (EWR) to Ostende (OST)](https://www.expedia.com/lp/flights/ewr/ost/newark-liberty-intl-airport-to-ostende)
- [Flights from Nice (NCE) to Ostende (OST)](https://www.expedia.com/lp/flights/nce/ost/nice-to-ostende)
- [Flights from Vitoria (VIT) to Ostende (OST)](https://www.expedia.com/lp/flights/vit/ost/vitoria-to-ostende)
- [Flights from London (LCY) to Ostende (OST)](https://www.expedia.com/lp/flights/lcy/ost/london-to-ostende)
- [Flights from Basel (BSL) to Ostende (OST)](https://www.expedia.com/lp/flights/bsl/ost/basel-to-ostende)
- [Flights from Belfast (BFS) to Ostende (OST)](https://www.expedia.com/lp/flights/bfs/ost/belfast-to-ostende)
- [Flights from Palermo (PMO) to Ostende (OST)](https://www.expedia.com/lp/flights/pmo/ost/palermo-to-ostende)
- [Flights from Phoenix (DVT) to Ostende (OST)](https://www.expedia.com/lp/flights/dvt/ost/phoenix-to-ostende)
- [Flights from Kraków (KRK) to Ostende (OST)](https://www.expedia.com/lp/flights/krk/ost/krakow-to-ostende)
- [Flights from Kuala Lumpur (KUL) to Ostende (OST)](https://www.expedia.com/lp/flights/kul/ost/kuala-lumpur-to-ostende)
- [Flights from Rome (FCO) to Ostende (OST)](https://www.expedia.com/lp/flights/fco/ost/rome-to-ostende)
- [Flights from Zagreb (ZAG) to Ostende (OST)](https://www.expedia.com/lp/flights/zag/ost/zagreb-to-ostende)
- [Flights from Atlanta (ATL) to Ostende (OST)](https://www.expedia.com/lp/flights/atl/ost/atlanta-to-ostende)
- [Flights from Montpellier (MPL) to Ostende (OST)](https://www.expedia.com/lp/flights/mpl/ost/montpellier-to-ostende)
- [Flights from Charleroi (CRL) to Ostende (OST)](https://www.expedia.com/lp/flights/crl/ost/charleroi-to-ostende)
- [Flights from Edinburgh (EDI) to Ostende (OST)](https://www.expedia.com/lp/flights/edi/ost/edinburgh-to-ostende)
- [Flights from Tirana (TIA) to Ostende (OST)](https://www.expedia.com/lp/flights/tia/ost/tirana-to-ostende)
- [Flights from Tel Aviv (TLV) to Ostende (OST)](https://www.expedia.com/lp/flights/tlv/ost/tel-aviv-to-ostende)
- [Flights from Al Arish (AAC) to Ostende (OST)](https://www.expedia.com/lp/flights/aac/ost/al-arish-to-ostende)
- [Flights from Zürich (ZRH) to Ostende (OST)](https://www.expedia.com/lp/flights/zrh/ost/zurich-to-ostende)
- [Flights from Cologne (CGN) to Ostende (OST)](https://www.expedia.com/lp/flights/cgn/ost/cologne-to-ostende)
- [Flights from Milan (MXP) to Ostende (OST)](https://www.expedia.com/lp/flights/mxp/ost/milan-to-ostende)
- [Flights from Eindhoven (EIN) to Ostende (OST)](https://www.expedia.com/lp/flights/ein/ost/eindhoven-to-ostende)
- [Flights from Tenerife (TFS) to Ostende (OST)](https://www.expedia.com/lp/flights/tfs/ost/tenerife-to-ostende)

\*Available to One Key members.

## Other language versions

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  ar: https://www.expedia.sa/lp/flights/was/ost/washington-to-ostende
  es-ES: https://www.expedia.es/lp/vuelos/was/ost/washington-d-c-a-ostende
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