Departure
Scheduled departure: 2026-10-29 10:00 (UTC-05:00). Confirm airport transport and terminal opening hours in advance.
UA3990 George Bush Intercontinental Airport to Louisville Muhammad Ali International Airport nonstop flight: schedule, airports, aircraft and travel guide.
UA3990 Flight Overview
UA3990 is operated by Mesa Airlines DBA United Express and connects George Bush Intercontinental Airport (IAH) and Louisville Muhammad Ali International Airport (SDF). Scheduled departure: 2026-10-29 10:00 (UTC-05:00); scheduled arrival: 2026-10-29 13:23 (UTC-04:00).
AirlineUnited Airlines
Flight numberUA3990
RouteIAH to SDF
Scheduled duration2 hr 23 min
Houston to Louisville Route Information
UA3990 is a nonstop flight from George Bush Intercontinental Airport (IAH) to Louisville Muhammad Ali International Airport (SDF). Use the information below to plan your journey.
Route distanceApprox. 1,267 km
Scheduled flight time2 hr 23 min
Time difference60 min
Flight typenonstop
Arrival
Scheduled arrival: 2026-10-29 13:23 (UTC-04:00). Arrange pickup, hotel and onward transport for the arrival date.
Time zones
Departure: Houston (UTC-05:00); arrival: Louisville (UTC-04:00).
UA3990 On-time Performance & History
Methodology
100%Arrival on-time rate
Sample flights100 (flights)
Average departure delay20 min
Average arrival early11 min
Cancllation rate0%
Longest delay-
Early arrivals80%
Historical statistics are for reference only and do not predict future flight performance.
Aircraft, Cabin & Services
Based on currently published aircraft and cabin information; the operating aircraft may change.
Published aircraft type
Embraer 175
Economy 31 in; Business 37 in
Business 12 · Economy 64
37 in
Seat configuration depends on the operating aircraft
31 in
Availability and fees depend on the flight
UA3990 Airports
Terminals follow the published schedule; check official airline channels for same-day gates and operations.
IAHGeorge Bush Intercontinental Airport
Houston, United States · UTC-05:00
- Departure terminal
- C
- Check-in counter
- Announced on the day
SDFLouisville Muhammad Ali International Airport
Louisville · UTC-04:00
- Arrival terminal
- Baggage belt
- Announced on the day
George Bush Intercontinental Airport Departure & Louisville Muhammad Ali International Airport Arrival Guide
Departure date: 2026-10-29. Terminal and arrival information helps plan your journey.
Departing from George Bush Intercontinental Airport
UA3990 is scheduled to depart from C. Allow time for international check-in, baggage drop, security and immigration.
Arriving at Louisville Muhammad Ali International Airport
Scheduled arrival is at . After immigration, take the MRT, taxi, ride-hailing service or airport bus to the city.
Planning your arrival
Scheduled arrival: 2026-10-29 13:23. Use the arrival date when booking hotels and pickup services.
Flight Changes, Cancellations & Missed Flights
If the schedule or aircraft changes, follow the booking channel and operating carrier rules.
Schedule changes
After an airline or booking-platform notice, confirm the new date, terminal and connecting transport.
Cancellation and changes
Refund, rebooking and involuntary-change rules depend on the booking channel, fare conditions and airline notice.
Missed flight
If you may not reach the airport on time, contact the booking channel or airline quickly to protect later sectors.
Check-in, Baggage & Entry Tips
International check-in deadlines, baggage allowance and entry requirements may vary by fare and traveller.
Arrive early for check-in
Arrive at least 3 hours before departure. Counter opening times and online check-in rules follow George Bush Intercontinental Airport guidance.
Check baggage allowance
Checked and carry-on baggage allowances depend on cabin, fare rules and membership tier. See the baggage terms in your booking.
Prepare entry documents
Before departure, check passport validity, visa or visa-free eligibility, andLouisville Muhammad Ali International Airport’ latest arrival declaration requirements.
What should I check before flying UA3990?
Check the departure date
For an overnight flight, check the departure date on your ticket and plan airport transport in advance.
Confirm the operating carrier
Follow the airline rules shown in your booking for check-in and checked baggage.
Check boarding information
Gates and operating times may change; follow airline notices and airport displays.
Popular route recommendations
UA3990 Frequently Asked Questions
Which airline operates this flight?
UA3990 is operated by United Airlines.
Where does it depart and arrive?
George Bush Intercontinental Airport (IAH) → Louisville Muhammad Ali International Airport (SDF).
What are the departure and arrival times?
Scheduled departure 10:00, arrival 13:23 · 2 hours 23 minutes.
Which terminal is used for check-in?
Departure terminal C, arrival terminal No data. Check-in, gate and baggage belt are announced on the day.
Are meals and inflight entertainment available?
Meals: Free snacks on flights over 300 miles; food and alcohol for purchase in economy. Inflight entertainment: Inflight entertainment is available.
Explore This Route
Departure airportFlights from George Bush Intercontinental Airport
Arrival airportLouisville Muhammad Ali International Airport information
Operating airlineMesa Airlines DBA United Express information