Quick Answer
The best overall way to get from Sea-Tac to Redmond for most travelers is the Link Light Rail combined with King County Metro Bus 545. It's cost-effective, reliable, and avoids traffic. The total one-way fare is under $6 and takes 70-90 minutes. For direct door-to-door service, Uber or Lyft is the fastest private option, costing $65-$95 and taking 35-60 minutes, depending on traffic.
Option 1: Light Rail & Public Bus (Best for Budget & Reliability)
This is the recommended method for solo travelers, couples, and anyone prioritizing low cost and predictable travel time over absolute speed. The system is modern, clean, and consistently avoids the notorious I-405/SR-520 traffic jams.
Step-by-Step Guide: Light Rail + Bus 545
- Walk to Sea-Tac Link Light Rail Station: From baggage claim, follow signs to the Link Light Rail on the 4th floor of the parking garage (connected via skybridges).
- Buy a Fare: Purchase a ticket from the vending machine or simply tap your contactless credit card/phone or ORCA card. A one-way fare to downtown Seattle is $3.25.
- Board the Light Rail (1-Line Northbound): Take the train towards Northgate. Ride for approximately 40 minutes.
- Transfer at Westlake or University St Station: Disembark at either station. The Bus 545 to Redmond stops on 4th Ave nearby. Your transfer within 2 hours is free with the same payment card.
- Board Bus 545 to Redmond: Ensure it's signed for "Redmond" (some go to Overlake). The bus ride takes about 30-40 minutes across the SR-520 bridge.
- Arrive in Redmond: Key stops include Redmond Transit Center (downtown core), and stops along Microsoft Campus (e.g., NE 36th St).
Key Insight: According to King County Metro, Bus 545 is one of the highest-ridership routes in the system, with frequent service (every 10-15 minutes during peak hours).
Other Public Bus Options
While the 545 is the primary route, alternatives exist:
- Bus 542: Also goes to Redmond via the University District. Slightly longer but useful if you're near the U-District light rail stop.
- Sound Transit Express Bus 560: Goes from Burien (south of Sea-Tac) to Bellevue. Requires a separate local bus connection to/from the airport, making it less convenient for this specific trip.
Option 3: Shared & Hotel Shuttles
Shared vans are a middle-ground between public transit and a private car.
Shared-Ride Vans (e.g., Shuttle Express)
Book in advance or at the counter on the 3rd floor. You share a van with other passengers going to similar areas.
Cost: Approximately $45 - $65 per person to Redmond.
Travel Time: 60 to 90+ minutes, as the van makes multiple stops to drop off other passengers first.
Best For: Travelers who want a door-to-door service but are flexible on time and want to save compared to a private car.
Hotel Shuttles
Many hotels in Redmond (like the Hyatt House, Redmond Marriott Town Center, or Residence Inn) offer complimentary airport shuttles. You must confirm availability with your hotel in advance. Shuttles usually run on a schedule and may require a call from baggage claim.
Option 4: Rental Car
Renting a car at Sea-Tac is a great choice if you plan to explore beyond Redmond (e.g., Snoqualmie Falls, Woodinville wine country, or the Cascade mountains).
Key Considerations:
- Location: All major rental companies (Hertz, Avis, Enterprise, etc.) are located at the Rental Car Facility. A free Rental Car Shuttle runs 24/7 from the terminal on the drive-through island.
- Drive to Redmond: Take WA-518 E to I-405 N, then take the SR-520 E exit toward Redmond. The drive is 20-25 miles and takes 35-60 minutes depending on traffic.
- Tolls: The SR-520 bridge has a toll. Rental companies will bill you later (with an admin fee) if you use it. Consider asking for a Good To Go! transponder or paying online within 72 hours.
- Parking in Redmond: Unlike Seattle, Redmond has ample (often free) parking at hotels, apartment complexes, and Microsoft campuses, making a rental car more practical here.
Data Point: According to WSDOT, the peak toll for the SR-520 bridge (weekday afternoons) can exceed $4.50.
Cost & Time Comparison: Sea-Tac Airport to Redmond
This table summarizes all options for easy decision-making.
| Transport Method | Avg. Cost (One-Way) | Avg. Travel Time | Best For | Key Note |
|---|---|---|---|---|
| Light Rail + Bus 545 | $3.25 - $5.75 | 70 - 90 min | Solo/Couple travelers, budget-conscious, avoiding traffic | Most Economical & Reliable. Free 2-hr transfer. |
| UberX / Lyft | $65 - $95 | 35 - 60+ min | Groups of 2-3, direct door-to-door, convenience | Price surges during rush hour/rain. |
| Shared Shuttle Van | $45 - $65 (per person) | 60 - 90+ min | Solo travelers wanting direct service cheaper than Uber | Travel time varies greatly with other passengers' stops. |
| Taxi (Metered) | $90 - $120+ | 35 - 60+ min | Immediate availability, prefer cash/regulated service | Often more expensive than rideshare. |
| Pre-Booked Private Car | $110 - $180+ | 35 - 60 min | Business travel, special occasions, luxury | Fixed price, meet-and-greet service. |
| Rental Car | $50 - $120/day + gas+tolls | 35 - 60 min | Travelers needing a car for entire stay, exploring region | Add cost of parking (often free in Redmond) & SR-520 toll. |
Traveler Tips & Local Insights
Essential Tips for a Smooth Trip
- Download Essential Apps: Transit Go (for bus/light rail tickets), Uber/Lyft, and Waze/Google Maps for real-time traffic and transit directions.
- Traffic is Unpredictable: I-405 is consistently ranked among the most congested corridors in the US. If your flight lands between 3-7 PM on a weekday, factor in significant delay for any road-based option.
- ORCA Card vs. Contactless Card: For a single trip, tapping a credit card is easiest. If you'll make 4+ transit trips during your visit, buy a physical ORCA card ($3 fee) and load a pass or e-purse for easier management.
- Late-Night Arrivals: Link Light Rail's last departure from Sea-Tac is around 1:00 AM. Bus 545's last departure from downtown is around 1:30 AM. Plan accordingly.
- Luggage on Transit: Light Rail has dedicated luggage areas. Buses have limited space; avoid oversized suitcases during rush hour.
- Microsoft/Amazon Employees: Check with your company's travel portal. Many have corporate discounts or codes with specific shuttle services or car rental agencies.
FAQs: Getting from Sea-Tac Airport to Redmond
What is the cheapest way to get from Sea-Tac to Redmond?
The absolute cheapest way is taking the Link Light Rail to downtown Seattle (University Street or Westlake Station) for $3.25, then transferring to King County Metro bus route 545 to Redmond. The total one-way cost is under $6. This combination is covered by the same ORCA card fare.
Is there a direct train or bus from Sea-Tac Airport to Redmond?
No, there is no single direct train or bus. You must make at least one transfer. The most seamless public transit route is Light Rail + Bus 545. For a direct, private ride, you must use a taxi, rideshare (Uber/Lyft), or private shuttle service.
How long does it take to get from Sea-Tac to Redmond?
Travel time varies greatly by mode: Light Rail + Bus takes 70-90 minutes. A direct taxi or rideshare takes 35-60 minutes, heavily dependent on I-405 and SR-520 traffic. Shared shuttles can take 60-90+ minutes due to multiple stops.
What's the best option if I arrive late at night or very early?
For arrivals between 1:00 AM and 5:00 AM, public transit (Light Rail/Bus) is not operating. Your only reliable options are 24/7 taxi services, Uber/Lyft, or pre-booking a private shuttle. Fares will be at a premium during these night hours.
Is it easy to travel with lots of luggage or children?
Public transit with multiple bags or young kids is challenging due to transfers, stairs, and crowded vehicles. For families or heavy luggage, a direct rideshare (UberXL/Lyft XL) or pre-booked private car is highly recommended for door-to-door convenience.
Should I rent a car at Sea-Tac for my stay in Redmond?
It depends. If your activities are concentrated in downtown Redmond/Bellevue and you'll use Microsoft/Amazon shuttles, you may not need one. If you plan to explore the wider Puget Sound area, hiking trails, or suburbs extensively, renting a car at Sea-Tac is very convenient. Redmond has ample parking compared to Seattle.
Where do I catch the bus or light rail at Sea-Tac Airport?
The Link Light Rail station is located on the parking garage's 4th floor, accessible via skybridges from the main terminal. For public buses and some shuttles, proceed to the Ground Transportation Plaza on the parking garage's 3rd floor. Clear signage is posted throughout baggage claim.
Can I use a contactless credit card instead of an ORCA card?
Yes. As of 2024, you can tap your Visa, Mastercard, or American Express credit/debit card (or mobile wallet like Apple Pay) directly on the readers for Link Light Rail and most King County Metro buses. It offers the same 2-hour transfer benefit as an ORCA card. However, an ORCA card is still better for managing monthly passes or youth/senior fares.