$721 Find Cheap Flights from Redmond to Portugal - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Redmond to Portugal departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Book Cheap Redmond to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Redmond to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Redmond to Portugal

Tue, Nov 3 - Thu, Nov 5
United Airlines Logo
5:00 am - 8:10 am
RDM
-
LIS
19h 10m
2 stops
United Airlines Logo
8:55 am - 9:06 pm
LIS
-
RDM
44h 11m
2 stops
$721United Airlines
Fri, Nov 13 - Tue, Nov 17
United Airlines Logo
7:30 pm - 9:20 am
RDM
-
LIS
53h 50m
2 stops
United Airlines Logo
11:20 am - 10:44 pm
LIS
-
RDM
43h 24m
3 stops
$735United Airlines
Tue, Sep 22 - Mon, Oct 19
United Airlines Logo
6:00 am - 9:20 am
RDM
-
LIS
19h 20m
2 stops
United Airlines Logo
7:25 am - 6:12 pm
LIS
-
RDM
42h 47m
2 stops
$838United Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
7:20 am - 11:05 am
RDM
-
LIS
43h 45m
2 stops
United Airlines Logo
1:00 pm - 10:44 pm
LIS
-
RDM
41h 44m
2 stops
$846United Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
6:00 am - 9:20 am
RDM
-
LIS
43h 20m
3 stops
United Airlines Logo
1:00 pm - 10:44 pm
LIS
-
RDM
41h 44m
2 stops
$852United Airlines
Tue, Sep 22 - Mon, Oct 19
United Airlines Logo
6:00 am - 9:20 am
RDM
-
LIS
19h 20m
2 stops
United Airlines Logo
1:00 pm - 6:39 pm
LIS
-
RDM
37h 39m
2 stops
$874United Airlines
Mon, Aug 10 - Tue, Aug 25
United Airlines Logo
7:39 pm - 10:30 am
RDM
-
LIS
30h 51m
2 stops
United Airlines Logo
5:05 am - 6:27 pm
LIS
-
RDM
21h 22m
2 stops
$875United Airlines
Wed, Aug 19 - Wed, Aug 26
United Airlines Logo
9:37 am - 10:30 am
RDM
-
LIS
16h 53m
2 stops
United Airlines Logo
11:25 am - 2:55 pm
LIS
-
RDM
35h 30m
2 stops
$879United Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
6:00 am - 9:20 am
RDM
-
LIS
43h 20m
3 stops
United Airlines Logo
1:00 pm - 9:21 pm
LIS
-
RDM
40h 21m
2 stops
$881United Airlines
Sat, Oct 17 - Sat, Oct 24
Delta Logo
1:26 pm - 5:50 pm
RDM
-
LIS
20h 24m
2 stops
Delta Logo
5:00 am - 6:46 pm
LIS
-
RDM
21h 46m
2 stops
$885Delta
Booking Insights

KAYAK's insights & trends for Redmond to Portugal flights

Get data-powered insights and trends into flights from Redmond to Portugal to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Redmond to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Redmond to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Redmond to Portugal is February, when tickets cost $479 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of round-trip tickets is $1,181 and $874 respectively.

Good to know

Low seasonJanuary
Cheapest flight$721
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Redmond to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Redmond to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Redmond to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Redmond to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Redmond to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Redmond to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Redmond to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Redmond to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Redmond to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Redmond to Portugal

 
Need help choosing which airline to fly with from Redmond to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9955 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
8.1Crew
6.7Food
Airline reviews

The flight was delayed from take off because only one runway was operational in San Francisco.

2.0 MediocreMartin, Apr 2026
EUG - SFO
Read more United Airlines reviews

The flight was delayed from take off because only one runway was operational in San Francisco.

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

United have really come back. Airport and boarding process is clear and good, app and information also very good

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

We had a 90 minute delay due to equipment failure that was detected just before we took off. United rebooked my connecting flight.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

Everything you need to know for your flight from Redmond to Portugal

Information on your arrival and departure airports