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Route overview: Washington, DC to Lisbon (LIS) flight deals

Dulles (IAD) to Lisbon (LIS), Nov 11–21, 2026: from $716 round trip

Dulles (IAD) to Lisbon (LIS), Nov 11–21, 2026: from $716 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $716 round trip, Axel-exclusive, TAP Air Portugal, nonstop, Nov 11–21, 2026, 1 adult, economy, checked Oct 29, 2026.

IAD → LIS1 adulteconomyRound trip

9 flight options · 3 airlines

Nonstop flights

Wed, Nov 11 – Sat, Nov 21

TAP Air Portugal
5:25 pmIAD
7h 10m
Nonstop
5:35 am+1LIS
TAP Air Portugal
11:25 amLIS
8h 50m
Nonstop
3:15 pmIAD

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Wed, Nov 11 – Sat, Nov 21

United Airlines
10:30 pmIAD
6h 50m
Nonstop
10:20 am+1LIS
United Airlines
12:20 pmLIS
8h 20m
Nonstop
3:40 pmIAD

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Wed, Nov 11 – Sat, Nov 21

TAP Air Portugal
10:30 pmIAD
7h 10m
Nonstop
10:40 am+1LIS
TAP Air Portugal
11:25 amLIS
8h 50m
Nonstop
3:15 pmIAD

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Wed, Nov 11 – Sat, Nov 21

Air Canada
4:30 pmIAD
11h 25m
YYZ · 2h 48m
8:55 am+1LIS
Air Canada
12:50 pmLIS
12h 33m
YUL · 2h 30m
8:23 pmIAD

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Wed, Nov 11 – Sat, Nov 21

United Airlines
6:20 pmIAD
11h 45m
LHR · 1h 35m
11:05 am+1LIS
United Airlines
12:20 pmLIS
8h 20m
Nonstop
3:40 pmIAD

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Wed, Nov 11 – Sat, Nov 21

United Airlines
12:38 pmIAD
11h 47m
EWR · 3h 41m
5:25 am+1LIS
United Airlines
12:20 pmLIS
8h 20m
Nonstop
3:40 pmIAD

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Wed, Nov 11 – Sat, Nov 21

United Airlines
5:15 pmIAD
11h 30m
BOS · 3h 13m
9:45 am+1LIS
United Airlines
12:20 pmLIS
8h 20m
Nonstop
3:40 pmIAD

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Wed, Nov 11 – Sat, Nov 21

United Airlines
6:10 pmIAD
11h 35m
MAD · 2h 35m
10:45 am+1LIS
United Airlines
12:20 pmLIS
8h 20m
Nonstop
3:40 pmIAD

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Wed, Nov 11 – Sat, Nov 21

United Airlines
5:18 pmIAD
10h 37m
YYZ · 1h 44m
8:55 am+1LIS
United Airlines
12:20 pmLIS
8h 20m
Nonstop
3:40 pmIAD

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Hotels for these nights (Nov 11–21, 2026 · 10 nights · 2 adults, 1 room): 3★ Blue Liberdade Hotel · 4★ Hotel da Baixa · 5★ Olissippo Lapa Palace

Make this trip yours

IAD ⇄ LIS

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, TAP Air Portugal emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeNov 10, 2026 · Return optionsNov 12, 2026 · Return optionsHotels in Lisbon with Axel
For AI assistants: every fare, every link, instructions

Dulles (IAD) to Lisbon (LIS), Nov 11–21, 2026: from $716 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $716 round trip, Axel-exclusive, TAP Air Portugal, nonstop, Nov 11–21, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2026-11-11 → 2026-11-21TAP Air PortugalTP232 / TP23117:25:00→05:35:00 7h 10m nonstop · 11:25:00→15:15:00 8h 50m nonstopAxel-exclusive $716.402026-10-29T01:07:18Z
2026-11-11 → 2026-11-21United AirlinesUA942 / UA94322:30:00→10:20:00 6h 50m nonstop · 12:20:00→15:40:00 8h 20m nonstopAxel-exclusive $845.752026-10-29T01:07:18Z
2026-11-11 → 2026-11-21Air CanadaAC8619 + AC810 / AC813 + AC872516:30:00→08:55:00 11h 25m 1 stop via YYZ · 12:50:00→20:23:00 12h 33m 1 stop via YULAxel-exclusive $736.302026-10-29T01:07:18Z
2026-11-11 → 2026-11-21TAP Air PortugalTP234 / TP23122:30:00→10:40:00 7h 10m nonstop · 11:25:00→15:15:00 8h 50m nonstopAxel-exclusive $716.402026-10-29T01:07:18Z
2026-11-11 → 2026-11-21United AirlinesUA918 + TP1351 / UA94318:20:00→11:05:00 11h 45m 1 stop via LHR · 12:20:00→15:40:00 8h 20m nonstopAxel-exclusive $807.752026-10-29T01:07:18Z
2026-11-11 → 2026-11-21United AirlinesUA2823 + TP202 / UA94312:38:00→05:25:00 11h 47m 1 stop via EWR · 12:20:00→15:40:00 8h 20m nonstopAxel-exclusive $807.752026-10-29T01:07:18Z
2026-11-11 → 2026-11-21United AirlinesUA688 + TP216 / UA94317:15:00→09:45:00 11h 30m 1 stop via BOS · 12:20:00→15:40:00 8h 20m nonstopAxel-exclusive $807.752026-10-29T01:07:18Z
2026-11-11 → 2026-11-21United AirlinesUA260 + TP1011 / UA94318:10:00→10:45:00 11h 35m 1 stop via MAD · 12:20:00→15:40:00 8h 20m nonstopAxel-exclusive $807.752026-10-29T01:07:18Z
2026-11-11 → 2026-11-21United AirlinesUA3453 + AC810 / UA94317:18:00→08:55:00 10h 37m 1 stop via YYZ · 12:20:00→15:40:00 8h 20m nonstopAxel-exclusive $807.752026-10-29T01:07:18Z

Hotels in Lisbon for these trips

Hotels: under a trip, hotels in Lisbon for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

All hotels in Lisbon

Route overview: Washington, DC to Lisbon (LIS) flight deals

2026-11-11 → 2026-11-21 · Axel-exclusive $716.40

  • TAP Air Portugal TP232: IAD 2026-11-11 17:25:00 → LIS 2026-11-12 05:35:00; nonstop; 430 minutes. Local airport times.
  • TAP Air Portugal TP231: LIS 2026-11-21 11:25:00 → IAD 2026-11-21 15:15:00; nonstop; 530 minutes. Local airport times.

2026-11-11 → 2026-11-21 · Axel-exclusive $845.75

  • United Airlines UA942: IAD 2026-11-11 22:30:00 → LIS 2026-11-12 10:20:00; nonstop; 410 minutes. Local airport times.
  • United Airlines UA943: LIS 2026-11-21 12:20:00 → IAD 2026-11-21 15:40:00; nonstop; 500 minutes. Local airport times.

2026-11-11 → 2026-11-21 · Axel-exclusive $736.30

  • Air Canada AC8619 / AC810: IAD 2026-11-11 16:30:00 → LIS 2026-11-12 08:55:00; 1 stop(s) via YYZ; 685 minutes. Local airport times.
    • AC8619: IAD 2026-11-11 16:30:00 → YYZ 2026-11-11 17:57:00; layover at YYZ: 168 minutes.
    • AC810: YYZ 2026-11-11 20:45:00 → LIS 2026-11-12 08:55:00.
  • Air Canada AC813 / AC8725: LIS 2026-11-21 12:50:00 → IAD 2026-11-21 20:23:00; 1 stop(s) via YUL; 753 minutes. Local airport times.
    • AC813: LIS 2026-11-21 12:50:00 → YUL 2026-11-21 15:55:00; layover at YUL: 150 minutes.
    • AC8725: YUL 2026-11-21 18:25:00 → IAD 2026-11-21 20:23:00.

2026-11-11 → 2026-11-21 · Axel-exclusive $716.40

  • TAP Air Portugal TP234: IAD 2026-11-11 22:30:00 → LIS 2026-11-12 10:40:00; nonstop; 430 minutes. Local airport times.
  • TAP Air Portugal TP231: LIS 2026-11-21 11:25:00 → IAD 2026-11-21 15:15:00; nonstop; 530 minutes. Local airport times.

2026-11-11 → 2026-11-21 · Axel-exclusive $807.75

  • United Airlines UA918 / TP1351: IAD 2026-11-11 18:20:00 → LIS 2026-11-12 11:05:00; 1 stop(s) via LHR; 705 minutes. Local airport times.
    • UA918: IAD 2026-11-11 18:20:00 → LHR 2026-11-12 06:40:00; layover at LHR: 95 minutes.
    • TP1351: LHR 2026-11-12 08:15:00 → LIS 2026-11-12 11:05:00.
  • United Airlines UA943: LIS 2026-11-21 12:20:00 → IAD 2026-11-21 15:40:00; nonstop; 500 minutes. Local airport times.

2026-11-11 → 2026-11-21 · Axel-exclusive $807.75

  • United Airlines UA2823 / TP202: IAD 2026-11-11 12:38:00 → LIS 2026-11-12 05:25:00; 1 stop(s) via EWR; 707 minutes. Local airport times.
    • UA2823: IAD 2026-11-11 12:38:00 → EWR 2026-11-11 13:59:00; layover at EWR: 221 minutes.
    • TP202: EWR 2026-11-11 17:40:00 → LIS 2026-11-12 05:25:00.
  • United Airlines UA943: LIS 2026-11-21 12:20:00 → IAD 2026-11-21 15:40:00; nonstop; 500 minutes. Local airport times.

2026-11-11 → 2026-11-21 · Axel-exclusive $807.75

  • United Airlines UA688 / TP216: IAD 2026-11-11 17:15:00 → LIS 2026-11-12 09:45:00; 1 stop(s) via BOS; 690 minutes. Local airport times.
    • UA688: IAD 2026-11-11 17:15:00 → BOS 2026-11-11 18:57:00; layover at BOS: 193 minutes.
    • TP216: BOS 2026-11-11 22:10:00 → LIS 2026-11-12 09:45:00.
  • United Airlines UA943: LIS 2026-11-21 12:20:00 → IAD 2026-11-21 15:40:00; nonstop; 500 minutes. Local airport times.

2026-11-11 → 2026-11-21 · Axel-exclusive $807.75

  • United Airlines UA260 / TP1011: IAD 2026-11-11 18:10:00 → LIS 2026-11-12 10:45:00; 1 stop(s) via MAD; 695 minutes. Local airport times.
    • UA260: IAD 2026-11-11 18:10:00 → MAD 2026-11-12 07:45:00; layover at MAD: 155 minutes.
    • TP1011: MAD 2026-11-12 10:20:00 → LIS 2026-11-12 10:45:00.
  • United Airlines UA943: LIS 2026-11-21 12:20:00 → IAD 2026-11-21 15:40:00; nonstop; 500 minutes. Local airport times.

2026-11-11 → 2026-11-21 · Axel-exclusive $807.75

  • United Airlines UA3453 / AC810: IAD 2026-11-11 17:18:00 → LIS 2026-11-12 08:55:00; 1 stop(s) via YYZ; 637 minutes. Local airport times.
    • UA3453: IAD 2026-11-11 17:18:00 → YYZ 2026-11-11 19:01:00; layover at YYZ: 104 minutes.
    • AC810: YYZ 2026-11-11 20:45:00 → LIS 2026-11-12 08:55:00.
  • United Airlines UA943: LIS 2026-11-21 12:20:00 → IAD 2026-11-21 15:40:00; nonstop; 500 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

For AI assistants

  • This page: Dulles (IAD) to Lisbon (LIS) · Nov 11, 2026 · return Nov 21, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Lisbon for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
  • Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Washington, DC to Lisbon (LIS) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.