Flights to Sierra, Ecuador from NT$21,344

View NT$8,094 flight on Sat, 2025/8/23Opens in a new window

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How much is the cheapest flight to Sierra?

Prices were available within the past 7 days and start at NT$8,094 for one-way flights and NT$21,344 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Aug 23 - Sat, Sep 13
SFO
San Francisco
UIO
Quito
NT$21,344 Roundtrip, found 6 days ago
NT$21,344
Roundtrip
found 6 days ago
Select United flight, departing Sat, Aug 23 from San Francisco to Quito, returning Sat, Sep 13, priced at NT$21,344 found 6 days ago
United
Sat, Aug 23 - Sat, Sep 13
SFO
San Francisco
UIO
Quito
NT$21,930 Roundtrip, found 6 days ago
NT$21,930
Roundtrip
found 6 days ago
Select United flight, departing Sat, Aug 23 from San Francisco to Quito, returning Sat, Sep 13, priced at NT$21,930 found 6 days ago
American Airlines
Sat, Aug 23 - Sat, Sep 13
SFO
San Francisco
UIO
Quito
NT$24,757 Roundtrip, found 6 days ago
NT$24,757
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Aug 23 from San Francisco to Quito, returning Sat, Sep 13, priced at NT$24,757 found 6 days ago
avianca
Sun, Aug 24 - Sat, Sep 13
SFO
San Francisco
UIO
Quito
NT$25,785 Roundtrip, found 6 days ago
NT$25,785
Roundtrip
found 6 days ago
Select avianca flight, departing Sun, Aug 24 from San Francisco to Quito, returning Sat, Sep 13, priced at NT$25,785 found 6 days ago
Delta
Sun, Aug 24 - Sat, Sep 13
SFO
San Francisco
UIO
Quito
NT$26,826 Roundtrip, found 6 days ago
NT$26,826
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Aug 24 from San Francisco to Quito, returning Sat, Sep 13, priced at NT$26,826 found 6 days ago

Frequently asked questions

How do I find cheap flights to Sierra that have flexible change policies?
At Expedia, we've been channeling our inner yogi to give you the most flexible fares on the market. Just check the "No change fee" box directly below the "Flexible change policies" heading to find your dream flight to Sierra.
Which airlines fly to Sierra?
Dig out your passport, pack your bags and select from these quality airlines that service Sierra:

  • American Airlines - 60 flights to or near Sierra each month, including 60 flights to Mariscal Sucre Intl. Airport (UIO) per month.
  • LATAM Airlines - 30 flights to or near Sierra each month, including 30 flights to Mariscal Sucre Intl. Airport (UIO) per month.
  • United Airlines - 30 flights to or near Sierra each month, including 30 flights to Mariscal Sucre Intl. Airport (UIO) per month.

How can I find cheap tickets to Sierra?
To get your hands on a great deal to Sierra, book well ahead of time. Also use Expedia's "flexible dates" feature at the top of your search results. This will list the cheapest prices for similar time frames. In the last seven days, NT$21,344 was the best price for a flight to Sierra.
How much is a flight to Sierra?
You could have nabbed a round-trip airfare to Sierra from anywhere between NT$21,344 and NT$26,826 in the last seven days. For one-way journeys leaving from San Francisco (SFO), the lowest price during this period was NT$8,094.
What are the most popular airports to fly into in Sierra?
A major entryway to Sierra, around 203 flights touch down at Mariscal Sucre Intl. Airport (UIO) every month. Search for an awesome deal, reserve your fare and get set to enjoy the best of this wonderful region.
When is the cheapest time to fly to Sierra?
Depart for Sierra earlier in the week and you'll usually be rewarded with lower-priced fares. Tuesday is known for being the cheapest day to get on a plane, followed by Monday. If you'd like to avoid the priciest flights, keep clear of Saturdays.
How much is a plane ticket to Sierra?
In the last seven days, fares to Sierra varied between NT$21,344 and NT$26,826. Prices rise as your travel date nears, so land yourself an awesome deal today.
What months are the cheapest to book a flight to Sierra?
The perfect month to purchase affordable fares to Sierra is February. Remember that in the United States, an expensive time to book a ticket is the busy month of December.
Flights to Sierra information
Destination airport
Mariscal Sucre Intl.
Destination airport IATA code
UIO
Destination city name
Quito
Roundtrip price
NT$21,344
*Available to Expedia members.