Cheap Flights To Sines 2026

Sines Flights as Low as $689

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
TAP Portugal
United
Virgin Atlantic
American Airlines
Delta
United
Wed, Nov 18 - Wed, Nov 25
IAD
Washington Dulles Intl.
LIS
Humberto Delgado
$777
Roundtrip
found 3 days ago
Select United flight, departing Wed, Nov 18 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Nov 25, priced at $777 found 3 days ago
Swiss International Air Lines
Air Canada
Turkish Airlines
British Airways
KLM
Wed, Nov 18 - Wed, Nov 25
IAD
Washington Dulles Intl.
LIS
Humberto Delgado
$848
Roundtrip
found 3 days ago
Select KLM flight, departing Wed, Nov 18 from Washington Dulles Intl. to Humberto Delgado, returning Wed, Nov 25, priced at $848 found 3 days ago
Lufthansa
ITA Airways
Aer Lingus
American Airlines
Thu, Sep 9 - Sat, Sep 18
BWI
Baltimore Washington Intl. Thurgood Marshall
LIS
Humberto Delgado
$1,283
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Thu, Sep 9 from Baltimore Washington Intl. Thurgood Marshall to Humberto Delgado, returning Sat, Sep 18, priced at $1,283 found 22 hours ago

Sines Flight Travel Guide

No matter how much you fight the travel bug, sometimes there's only one solution—to hop on the next plane to Sines. AARP Travel Center Powered by Expedia® is here to help you cure that bug with great deals on flights and activities. AARP Travel features their members-only discount with the best rates from Expedia, offering members the best price in travel, guaranteed. As an AARP member, you'll pay no booking fees on flights, and often receive exclusive rates on car rentals and hotels.

If you've got a more relaxed schedule, we will have more deals to show you. In other words, you'll have a better chance of finding that cheap flight you've been looking for.

Transportation at the Airport

Once you have got your flight scheduled to Sines with AARP Travel, you may want to book a vehicle so you can get around on your own. You can book a Sines rental car under our cars tab and hop into the car as soon as you step out of the airport. For more information, check out the Sines Car Rentals Guide.

Things to Do in Sines

Not sure where to start? Not to worry—there's lots to do in this city. Sines has so much to do, and we can help you get started.

If you're looking for some fun activities to do in Sines, make sure you look at our "Things to Do in Sines" page for activities and excursions for the whole crew.

Book Your Hotel in Sines

Sines has lodging options in the area, make sure you check out our hotel listings tab for some great recommendations from past visitors. Remember that you will get the best for your trip to to Sines when you stay with AARP Travel.

Booking Your Trip to Sines

Whether you are heading out on a family annual trip, a business trip, or exploring a place you have never been before, we have the perfect getaway waiting for you. Do not wait a minute longer—book your airfare today and land in Sines tomorrow.